| 1941 KRAEMER Window Construction Patent Print |
| 1941 JACOBSON Aircraft Construction Patent Print |
| 1941 WEST Refrigerator Car Construction Patent |
| 1941 MORRIS Armed Tank Construction Patent Print |
| 1941 DURYEA OTHO Car Construction Patent Print |
| 1941 O C DURYEA CORP Car Construction Patent |
| 1941 LYNCH Boat Construction Patent Print Art |
| 1941 LILLIAN Airplane Construction Patent Print |
| 1941 SCHMOHL ALFRED Car Construction Patent |
| 1941 ARTHUR L PAULUS Vehicle Construction Patent |
| 1941 OLANDER ROLAND Car Construction Patent |
| 1941 HANNS Aircraft Construction Patent Print |
| 1941 WOODS Nacelle Construction Patent Print Art |
| 1941 DEAN End Construction For Rail Cars Patent |
| 1941 HEINRICH Airscrew Blade Construction Patent |
| 1941 RCA CORP Electric Piano Construction Patent |
| 1941 MINER INC W H Car Construction Patent Print |
| 1941 HOGG Gun Barrel Construction Patent Print |
| 1941 BARRETT Dump Body Construction Patent Print |
| 1941 JOHNSON Boat Hull Construction Patent Print |
| 1941 KLEMM Aircraft Construction Patent Print |
| 1941 DRIGGS Aircraft Construction Patent Print |
| 1941 LYNCH HARRY Boat Construction Patent Print |
| 1941 HALE Tire Construction FIRESTONE Patent 48850 |
| 1941 KOCH Airplane Construction Patent Print Art |
| 1941 BERLINER Aircraft Construction Patent Print |
| 1941 DOUDEN Electric Piano Construction Patent |
| 1941 GROT ANTON Stage Construction Patent Print |
| 1941 HASELTINE Car Construction Patent Print Art |
| 1941 CARTER Garment Construction Patent Print |
| 1941 DEARBORN Sewing Machine Construction Patent |
| 1941 SMALL Insulated Wall Construction Patent |
| 1941 ELLING Lifeboat Construction Patent Print |
| 1941 PRESTON Vehicle Bed Construction Patent |
| 1941 RANASEY Aircraft Construction Patent Print |
| 1941 GILPIN GARTH Hatch Construction Patent |
| 1941 BROWN STANLEY Ski Construction Patent Print |
| 1941 RAINE Vehicle Construction Patent Print Art |