| 1939 RODMAN Method Of Air Conditioning Patent 19998 |
| 1935 ANDERSON Air Conditioning Apparatus Patent |
| 1936 TRANE CO Air Conditioning Apparatus Patent |
| 1950 NEU SA Air Conditioning System Patent Print |
| 1930 BETZ Air Conditioning Unit Patent 8650 |
| 1949 GARRETT CORP Air Conditioning System Patent |
| 1938 FRICK CO Air Conditioning System Patent |
| 1935 MARSHALL Air Conditioning For Cars Patent |
| 1932 ANDERSON Air Conditioning STURTEVANT Patent 20175 |
| 1949 REILLY Air Conditioning System Patent Print |
| 1937 CHAPMAN Air Conditioning System Patent |
| 1937 GEN ELECTRIC Air Conditioning System Patent |
| 1947 PEGG Vehicle Air Conditioning Patent Print |
| 1970 WARN Air Conditioning Apparatus Patent |
| 1950 SMITH Air Conditioning Apparatus Patent |
| 1966 VIRGIL Air Conditioning Device Patent Print |
| 1949 JOHN Air Conditioning Apparatus Patent |
| 1950 LOUIS Air Conditioning System Patent Print |
| 1939 ANDERSON Air Conditioning System Patent |
| 1965 NOEL Air Conditioning Systems Patent Print |
| 1945 CRAWFORD Air Conditioning System Patent |
| 1945 GOODMAN Air Conditioning Vaporizer Patent 26229 |
| 1949 JONES Air Conditioning Unit Patent Print |
| 1936 ALFRED Air Conditioning Apparatus Patent |
| 1938 ANDERSON Air Conditioning System Patent |
| 1945 PARSONS ROBERT Air Conditioning Patent |
| 1936 HANSON Air Conditioning System Patent Print |
| 1933 ANDERSON Air Conditioning STURTEVANT Patent 20142 |
| 1936 ANDEREGG Air Conditioning Apparatus Patent |
| 1931 MELCHER Air Conditioning Apparatus Patent |
| 1949 MAYER Air Conditioning System Patent Print |
| 1938 CRAWFORD Air Conditioning System Patent |
| 1937 SELJE Air Conditioning Control Panel Patent 24494 |
| 1936 ANDERSON Air Conditioning System Patent |