| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 21 | Antisweep anchorage for mines of the marine type | US46591542 | 1942-11-17 | US2399307A | 1946-04-30 | ALLEN JR CHARLES S |
| 22 | Submarine weapon for use against vessels equipped with paravanes or the like | US5968025 | 1925-09-30 | US1582387A | 1926-04-27 | EMANUELE ELIA GIOVANNI |
| 23 | Mine-anchor device | US64664923 | 1923-06-20 | US1566834A | 1925-12-22 | CLARK CROSS SAMUEL |
| 24 | Submarine mine | US33871919 | 1919-11-17 | US1448976A | 1923-03-20 | PALMER WAYNE F |
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