| 1949 JOY CO Pressure Controlling Art Print |
| 1949 DENNISTOUN Controlled Pressure Gun Patent |
| 1949 BAAK Pressure Control Apparatus Patent |
| 1949 HONEYWELL REGULATOR CO Pressure Control |
| 1949 JOY MFG CO Pressure Control Device Patent |
| 1949 EATON Fluid Pressure Control Mechanism Art |
| 1949 MARK Pressure Inflated Parachute Load Arresting |
| 1949 NAT PRESSURE COOKER Steering Handle Means |
| 1949 GARRETT CORP AIRES Cabin Pressure Regulator |
| 1949 PAGET Pressure Controlling Apparatus Patent |
| 1949 GUARDITE CORP Window Pressure Chambers Art |
| 1949 KEMPER Cabin Pressure Regulator Patent |
| 1949 BENT Fluid Pressure Controlled Positioning |
| 1949 PAGET WIN Pressure Regulator Patent Print |
| 1949 DAVIS Air Pressure Differential Creating |
| 1949 MITTON Safety Pressure Detonator Bomb Art |
| 1949 JOY MFG CO Pressure Regulator Patent Print |
| 1949 SANFORD Fluid Pressure Control Mechanism |
| 1949 PAGET Pressure Control Device Patent Print |
| 1949 CARR Pressure Lubricated Track Tractor Roller |
| 1949 MCINTOSH Controlling Pressure Art Print |
| 1949 SIDNEY Ordnance Pressure Time Recorder Art |
| 1949 BEBINGER Fluid Pressure Actuated Clutch Art |
| 1949 JOY CO Fluid Pressure Actuated Clutch Art |
| 1949 HEINEMAN Window Pressure Chambers Art Print |
| 1949 VINTAGE MIRRO-MATIC PRESSURE COOKER BOOKLET |