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US Patent: 8,216
Mode of Securing Pinions and Staffs of Watches in Lathe or Bench Chucks
Patentee:
J. M. Bottum - New York, NY

USPTO Classifications:
279/158

Tool Categories:
metalworking machines : metal lathes : watchmakers lathes
trade specific : clockmaker

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
O. D. Munn
S. H. Wales

Patent Dates:
Granted: Jul. 15, 1851

Reissue Information:
Reissued as RE375 (Jul. 08, 1856)

Patent Pictures:
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