FILTER-MINDER
Filed: January 19, 1978
DIFFERENTIAL PRESSURE GAUGE
Owned by: ASTRA ASSOCIATES, INC.
Serial Number: 73155875
GAUGE MINDER
Filed: January 19, 1978
GAUGE PROTECTOR WITH ADJUSTABLE DAMPING
Owned by: ASTRA ASSOCIATES, INC.
Serial Number: 73155876
VARI-DAMP
Filed: January 19, 1978
SURGE PROTECTOR AND PULSATION DAMPENER FOR PRESSURE INSTRUMENTS
Owned by: ASTRA ASSOCIATES, INC.
Serial Number: 73155877
DELTA
Filed: January 19, 1978
DIFFERENTIAL PRESSURE GAUGE
Owned by: ASTRA ASSOCIATES, INC.
Serial Number: 73155878
MID-WEST
Filed: September 11, 1979
Differential Pressure Gauges for Use in Measuring Fluid Pressure Drops; Surge Protector and Pulsation Dampeners for Protecting…
Owned by: ASTRA ASSOCIATES, INC.
Serial Number: 73230941
DELTA TAP
Filed: July 30, 1982
Apparatus-Namely, an Averaging Pitot Tube which Can Be Installed, Removed and Reinserted into a Pressurized System, to Generate…
Owned by: ASTRA ASSOCIATES, INC.
Serial Number: 73377430
