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US Patent: 437,297
Improvement in Screw-Drivers
Ratcheting Screwdriver
Patentees:
George E. Gay - Augusta, ME United States
John H. Parsons - Augusta, ME United States

USPTO Classifications:
81/32

Tool Categories:
screwdrivers : screwdriver mechanisms : ratcheting screwdrivers

Assignees:
None

Manufacturer:
Unknown

Witnesses:
E. H. Gardener
J. A. Gardener

Patent Dates:
Granted: Sep. 30, 1890

Patent Pictures: [ 1 | 2 | 3 ]
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