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US Patent: 336,560
Screw-Driver
Patentee:
John S. Fray - Bridgeport, CT

USPTO Classifications:
81/33

Tool Categories:
screwdrivers : screwdriver mechanisms : ratcheting screwdrivers

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
A. M. Wooster
C. E. Ruggles

Patent Dates:
Applied: Nov. 07, 1885
Granted: Feb. 23, 1886

Patent Pictures:
USPTO pdf tiff
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