| 1921 KRUPP AG Sighting Ordnance Art Print Patent |
| 1921 MAX Sighting Device For Ordnance Patent |
| 1921 VICKERS LTD Ordnance Patent Print Art |
| 1921 VICKERS LTD Ordnance Sighting Art Print |
| 1921 AUTO ORDNANCE CORP Double Barreled Gun Art |
| 1921 AUTO ORDNANCE CORP Gun Patent Print Art |
| 1921 GOVERNMENT Ordnance Patent Print Art |
| 1921 RICHARD Pointing Device For Ordnance Patent |
| 1921 SHERMAN HALSEY Ordnance Patent Print Art |
| 1921 US ORDNANCE Automatic Firearm Art Print |
| 1921 ABBOT CHARLES Ordnance Patent Print Art |
| 1921 TREVOR Ordnance Sighting Apparatus Patent |
| 1921 PAYNE OSCAR Gun AUTO ORDNANCE CORP Patent |
| 1921 GRAHAM OLIVER Gun AUTO ORDNANCE CORP Patent |
| 1921 AUGUSTUS SMITH Ordnance Patent Print Art |
| 1921 ARMSTRONG WHITWORTH ENG Loading Ordnance |
| 1921 AUTO ORDNANCE CORP Magazine Construction |
| 1921 US ORDNANCE COMPANY Gas Check Patent Print |
| 1921 TREVOR DAWSON Ordnance VICKERS LTD Patent |
| 1921 US ORDNANCE COMPANY Rifle Grenade Patent |
| 1921 PAYNE OSCAR Gun Sight AUTO ORDNANCE CORP |
| 1921 ORDNANCE ENGINEERING CORP Illuminating Body |
| 1921 AUTO ORDNANCE CORP Automatic Gun Patent |
| 1921 KRUPP AG Pointing Ordnance Art Print Patent |
| 1921 ORDNANCE ENGINEERING CORP Trench Mortar Art |
| 1921 BERGEN POINT IRON WORKS Ordnance Patent |
| 1921 AUTO ORDNANCE CORP Ammunition Lubrication |
| 1921 AUTO ORDNANCE CORP Gun Sight Patent Print |
| 1921 WARREN Loading Ordnance Art Print Patent |