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| Patents for Ambrose Webster | |||||
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| Number | Date | Patentee | Title | Type | |
| 218,844 | Aug. 26, 1879 | A. Webster | Improvement in mechanical movements | watchmaker | |
| 412,439 | Oct. 08, 1889 | A. Webster | Tail-stock spindle for lathes | watchmakers lathes | |
| 417,615 | Dec. 17, 1889 | A. Webster | Machine for Grinding Lathe Beds | surface grinders | |