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Patents for James M. Bottum | |||||
Number | Date | Patentee | Title | Type | |
8,216 | Jul. 15, 1851 | J.M. Bottum | Mode of Securing Pinions and Staffs of Watches in Lathe or Bench Chucks | watchmakers lathes | |
12,502 | Mar. 13, 1855 | J.M. Bottum | Polishing Apparatus for Watchmakers' Lathes | watchmakers lathes | |
RE375 | Jul. 08, 1856 | J.M. Bottum | Mode of Securing Pinions and Staffs of Watches in Lathe or Bench Chucks | watchmakers lathes |