| 2083780 | Control system | |||
| 2183874 | Air conditioning system | |||
| 2191208 | Air conditioning | |||
| 2222628 | Effective temperature control | |||
| 2255639 | Condition controller | |||
| 2403798 | Summer-winter control instrument | |||
| 2707880 | Relative humidity measuring apparatus | |||
| 2806991 | Electrical vapor detector | |||
| 2862090 | Apparatus for determining moisture | |||
| 2870306 | Wide range electrical humiditysensing unit | |||
| 2872668 | Moisture detector | |||
| 2876321 | Humidity responsive resistor |
| DE961313C |