| 1938 DER OHE Case Cart Or Truck Patent Print Art |
| 1951 DER SLUYS Railway Truck Patent Print Art |
| 1956 DER Underwater Breathing Device Patent |
| 1938 DER MINNE Wave Stilling Oil Patent Print |
| 1941 VAN DER CLUTE Clothespin New Design Patent 31850 |
| 1962 DER YUEN Aero Gangplank Patent Print Art |
| 1958 DER Tiltable Bed Hauling Device Patent |
| 1963 DER Boat Propulsion Patent Print Art |
| 1896 VON DER KAMMER X-Ray Light Bulb Patent 12672 |
| 1950 DER Link Stabilized Railway Truck Patent |
| 1949 DER Truck Hanger Suspension Patent Print |
| 1942 DER SLUYS Railway Equipment Patent Print |
| 1963 DER Vehicle Electric Heating System Patent |
| 1939 DER MEULEN Cowtail Holder Patent Print Art |
| 1942 DER Balances Hydraulic Valve Patent Print |
| 1968 DER HEIDE Collapsible Boat Patent Print Art |
| 1934 DER LINDEN Game Implement Patent Print Art |
| 1963 DER PUTTEN Boat Propulsion Patent Print Art |
| 1990 VAN DER HOEVEN Aircraft Aft BOEING Patent 19171 |
| 1921 VAN DER BIJL Photo Electric Translating Patent 864 |
| 1961 DER Clutch For Freewheel Cycle Hub Patent |
| 1928 DER HEYDE Golf Club Patent Print Art |
| 1944 DER Hydraulic Remote Control System Patent |