L & N
Filed: May 18, 1928
[ ELECTRIC FURNACES, OVENS, AND HEATERS; FOR RESISTORS AND ELECTRIC HEATING UNITS FOR FURNACES, OVENS AND HEATERS; FOR ]…
Owned by: LEEDS & NORTHRUP COMPANY
Serial Number: 71266600
L&N
Filed: February 5, 1929
ELECTRICAL MEASURING INSTRUMENTS-NAMELY, ELECTRIC METERS AND INDICATORS, GALVANOMETERS, VOLTMETERS, AMMETERS, WHEATSTONE…
Owned by: LEEDS & NORTHRUP COMPANY
Serial Number: 71278903
MICROMAX
Filed: January 15, 1932
HIGH SENSITIVITY HIGH SPEED RECORDERS OF MAGNITUDES OF TEMPERATURE, HUMIDITY, FREQUENCY, SPEED, PRESSURE, CONDUCTIVITY,…
Owned by: LEEDS & NORTHRUP COMPANY
Serial Number: 71323052
ELECTROMAX
Filed: May 22, 1947
AUTOMATIC, ELECTRICALLY OPERATED CONTROLLING, INDICATING AND SIGNALLING APPARATUS FUNCTIONING RESPONSIVELY TO THE FLUCTUATIONS…
Owned by: LEEDS & NORTHRUP COMPANY
Serial Number: 71522797
SHUNTFLO
Filed: February 1, 1951
ROTARY TYPE INTEGRATING FLOW METERS FOR STEAM, AIR AND GAS, AND ACCESSORIES THEREFOR; NAMELY, LIQUID LEVEL GAUGE GLASS,…
Owned by: LEEDS & NORTHRUP COMPANY
Serial Number: 71609476
RAYOSCAN
Filed: April 19, 1961
Apparatus and Systems for Measurement of Temperature Using a Moving Pyrometer Detector
Owned by: LEEDS & NORTHRUP COMPANY
Serial Number: 72118157
TESTIP
Filed: August 13, 1963
Electrical Testing Device for Expendable Immersion Thermocouple Temperature Measuring Apparatus
Owned by: LEEDS & NORTHRUP COMPANY
Serial Number: 72174967
HY-THERM
Filed: April 15, 1965
ELECTRICAL INSTRUMENTS, SYSTEMS, AND COMPONENTS-NAMELY, THERMAL TRANSDUCERS AND SENSORS, CALORIMETERS, RADIOMETERS, RESISTANCE…
Owned by: LEEDS & NORTHRUP COMPANY
Serial Number: 72216595
FLEXELECT
Filed: December 7, 1965
SELECTOR SWITCH FOR MULTIPOINT RECORDERS
Owned by: LEEDS & NORTHRUP COMPANY
Serial Number: 72234129
MILLITEMP
Filed: June 23, 1966
ELECTRICAL MEASURING AND CONTROL INSTRUMENTS-NAMELY, INDICATORS AND INDICATING CONTROLLERS, OF THE DEFLECTION TYPE FOR INDICATING…
Owned by: LEEDS & NORTHRUP COMPANY
Serial Number: 72248817
SPECTRAY
Filed: August 3, 1966
RADIATION PYROMETER
Owned by: LEEDS & NORTHRUP COMPANY
Serial Number: 72251637
BATESTER LOLLY POP
Filed: October 31, 1966
TESTING EQUIPMENT-NAMELY, MOLTEN METAL SAMPLER
Owned by: LEEDS & NORTHRUP COMPANY
Serial Number: 72257577
SAMPTIP
Filed: September 18, 1969
IMMERSION MOLTEN METAL SAMPLER FOR OBTAINING A SAMPLE OF MOLTEN MATERIAL AT A SUBSURFACE LEVEL OF A MOLTEN BATH
Owned by: LEEDS & NORTHRUP COMPANY
Serial Number: 72338253
INFOTRAK
Filed: January 14, 1970
RECORDER FOR PLOTTING CURVES ON INDIVIDUAL CARDS
Owned by: LEEDS & NORTHRUP COMPANY
Serial Number: 72348547
TRENDTRAK
Filed: February 17, 1970
CURVE-FOLLOWING PROGRAMMER FOR AUTOMATICALLY CHANGING THE POSITION OF A SERVO-DRIVEN SHAFT IN ACCORDANCE WITH A PLOTTED…
Owned by: LEEDS & NORTHRUP COMPANY
Serial Number: 72351620
PURIFAX
Filed: March 22, 1971
CHEMICAL APPARATUS-NAMELY, VESSELS THAT RECEIVE BOTH SLUDGE AND A CHEMICAL OXIDIZING AGENT TO PROMOTE THE OXIDATION OF THE…
Owned by: LEEDS & NORTHRUP COMPANY
Serial Number: 72387025
FYRESTAN
Filed: October 6, 1971
ENCLOSING ENVELOPES FOR HEAT-RESPONSIVE ELEMENTS OF ELECTRICAL PYROMETERS
Owned by: LEEDS & NORTHRUP COMPANY
Serial Number: 72404452
SILGUIDE
Filed: December 27, 1971
APPARATUS FOR INDICATING THE SILICON CONTENT OF METALS
Owned by: LEEDS & NORTHRUP COMPANY
Serial Number: 72411197
POLYPAK
Filed: April 26, 1973
VOLUMETRIC DRY FEEDERS AND WEIGHERS
Owned by: LEEDS & NORTHRUP COMPANY
Serial Number: 72455690
CENTRY
Filed: October 16, 1974
INDUSTRIAL PROCESS CONTROL APPARATUS AND SYSTEMS-NAMELY, AUTOMATIC, MANUAL, AND COMPUTER-COMPATIBLE PROCESS CONTROLLERS;…
Owned by: LEEDS & NORTHRUP COMPANY
Serial Number: 73034773
RESIMELT
Filed: June 1, 1978
DIGITAL RESIN MELT POINT TESTER FOR RESIN COATED SAND
Owned by: LEEDS & NORTHRUP COMPANY
Serial Number: 73172614
MAXILAB
Filed: February 1, 1979
THERMOANALYTIC APPARATUS USED TO COMPUTE AND DISPLAY CARBON, CARBON EQUIVALENT, SILICON, AND TEMPERATURE OF A SAMPLE OF…
Owned by: LEEDS & NORTHRUP COMPANY
Serial Number: 73202227
MDM
Filed: July 16, 1979
Electrically Operated Digital Indicators for Sequentially Indicating the Magnitude of a Plurality of Electrical Input Signals…
Owned by: LEEDS & NORTHRUP COMPANY
Serial Number: 73223396
PH PEN
Filed: October 31, 1985
PH METERS
Owned by: LEEDS & NORTHRUP COMPANY
Serial Number: 73566172
MELTLAB
Filed: February 25, 1986
ELECTRONIC COMPUTERS
Owned by: LEEDS & NORTHRUP COMPANY
Serial Number: 73585363
SILAB
Filed: January 29, 1990
instruments for computing and/or displaying parameters relating to molten metal, including silicon content and temperature…
Owned by: LEEDS & NORTHRUP COMPANY
Serial Number: 74023761
ACCUGUARD
Filed: April 13, 1992
controlled flow-through module of pipes and valves used for the purpose of automatically cleaning and/or calibrating electrodes…
Owned by: LEEDS & NORTHRUP COMPANY
Serial Number: 74265107
TRI-LASER
Filed: April 26, 1993
particle size analyzer
Owned by: LEEDS & NORTHRUP COMPANY
Serial Number: 74382147
PROGENY
Filed: May 9, 1994
devices and operating software and software which creates display screens for sensing, measuring, controlling, recording…
Owned by: LEEDS & NORTHRUP COMPANY
Serial Number: 74521552
L&N
Filed: July 26, 1995
samplers made of metal for sampling liquid metal
Owned by: LEEDS & NORTHRUP COMPANY
Serial Number: 74706428
