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US Patent: 151,680
Clamps
Patentees:
William H. Britton (exact or similar names) - Milford, MA
Olney S. Thayer (exact or similar names) - Bellingham, MA

USPTO Classifications:
269/146, 269/208, 296/18

Tool Categories:

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
James R. Davis
George V. Cooke

Patent Dates:
Applied: May 15, 1874
Granted: Jun. 09, 1874

Patent Pictures:
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