Electrical and scientific apparatus Trademarks Filed in March 2, 1931
DURAGAUGE
Filed: March 2, 1931
PRESSURE GAGES
Owned by: ASHCROFT INC.
Serial Number: 71311598
ELECTRO LUX
Filed: March 2, 1931
ELECTRICALLY-DRIVEN FLOOR POLISHERS AND PARTS THEREOF
Owned by: ELECTROLUX, INC.
Serial Number: 71311601
THERMOTROL
Filed: March 2, 1931
THERMOSTATIC TEMPERATURE REGULATOR
Owned by: STERLING, INC.
Serial Number: 71311629
