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US Patent: 275,235
Screwdriver
Patentees:
Charles H. Mallett - Augusta, ME
Zachary T. Furbish - Augusta, ME

USPTO Classifications:
192/44, 81/33

Tool Categories:
screwdrivers : screwdriver mechanisms : ratcheting screwdrivers

Assignees:
None

Manufacturer:
Furbish & Hamlin - Unk, ME

Witnesses:
J. E. Badger
S. Lancaster

Patent Dates:
Applied: Jan. 14, 1882
Granted: Apr. 03, 1883

Patent Pictures:
Image courtesy and (C) Martin J. Donnelly, www.mjdtools.com
USPTO pdf tiff
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