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US Patent: 20,942
Making Watches
Watch Case Making
Patentee:
Edwin Field (exact or similar names) - Providence, Providence County, RI

USPTO Classifications:
72/137, 72/701

Tool Categories:
specialty machines : watchmaking machinery
metalworking machines : sheet metal : sheet metal forming rolls

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Isaac A. Brownell
Henry Martin

Patent Dates:
Granted: Jul. 20, 1858

Patent Pictures:
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