Gun-carriage trailer with combined propulsion by wheels and by endless track members |
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| 申请号 | US39230720 | 申请日 | 1920-06-28 | 公开(公告)号 | US1426219A | 公开(公告)日 | 1922-08-15 |
| 申请人 | IRENE ROY; | 发明人 | IRENE ROY; | ||||
| 摘要 | |||||||
| 权利要求 | |||||||
| 说明书全文 | |||||||
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