DE1232788B
|
|
Suction pressure meter
|
US3196682A
|
|
Humidity sensing circuit
|
US3185041A
|
|
Filter gauge
|
US3100044A
|
|
Thermometer carrying case
|
DE1207706B
|
|
Device for monitoring the degree of contamination of air filters for internal combustion engines
|
US3066527A
|
|
Air filter gauge
|
US2921157A
|
|
Filter gauge
|
US2904071A
|
|
Valve
|
US2610508A
|
|
Pressure indicator
|
US2099548A
|
|
Apparatus for testing gases
|
US2106772A
|
|
Pressure recording apparatus and method
|
US2052946A
|
|
Process and apparatus for analyzing gases
|
US2053121A
|
|
Process and apparatus for analyzing gases
|
US1940513A
|
|
Process for determining the combustible content in a gas mixture
|
US1890592A
|
|
Sampling tube
|
US1890627A
|
|
Sampling tube
|
US1901209A
|
|
Apparatus for measuring temperatures of moving bodies
|
US1901192A
|
|
Apparatus for measuring temperatures of moving bodies
|
US1901208A
|
|
Process and apparatus for measuring temperatures of moving bodies
|
US1481952A
|
|
Magnifying manometer
|