| 1935 ANDERSON Air Conditioning Apparatus Patent |
| 1936 TRANE CO Air Conditioning Apparatus Patent |
| 1939 GEN ELECTRIC Air Flow Control Apparatus Art |
| 1921 READEY Air Brake Apparatus Patent Print Art |
| 1970 WARN Air Conditioning Apparatus Patent |
| 1950 SMITH Air Conditioning Apparatus Patent |
| 1934 PRICELER CORP Air Control Apparatus Patent |
| 1970 BUNTEN Air Cooling Apparatus Patent Print |
| 1890 MERRYMAN Air Accumulator Divers Apparatus Patent 8 |
| 1949 JOHN Air Conditioning Apparatus Patent |
| 1927 ANTON Air Purifier Apparatus Patent Print |
| 1942 BRIZZOLARA Air Conditioning Apparatus Art |
| 1970 MOTOROLA INC Air Droppable Apparatus Patent |
| 1970 CAIN Air Droppable Apparatus Patent Print |
| 1936 ALFRED Air Conditioning Apparatus Patent |
| 1932 HEINRICH Air Sound Apparatus Patent Print |
| 1931 HARRIS Air Circulating Apparatus Patent |
| 1968 RUSSNAK Air Droppable Apparatus Patent |
| 1939 ANDERSON Air Flow Control Apparatus Patent |
| 1934 PRICE Air Control Apparatus Patent Print |
| 1933 TROGNER Air Navigation Apparatus Patent |
| 1936 ANDEREGG Air Conditioning Apparatus Patent |
| 1935 DAY Air Circulating Apparatus Patent Print |
| 1931 MELCHER Air Conditioning Apparatus Patent |
| 1953 Scott Aviation Air-Pak fireman apparatus print ad |
| North 850 Emergency Supplied Air Breathing Apparatus |