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| Withdrawn Patents | |
| Grant Date | Patent Number |
| 1918-05-21 | 1,266,540 |
| 1918-05-21 | 1,266,541 |
| 1918-05-21 | 1,266,693 |
| 1918-05-21 | 1,266,709 |
| 1918-05-21 | 1,266,756 |
| 1918-05-21 | 1,266,792 |
| 1918-05-21 | 1,267,092 |
| 1918-05-21 | 1,267,161 |
| 1918-05-21 | 1,267,196 |