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US Patent: 59,757
Improved Tool-Handle
Double-Ratchet Tool-Handle
Patentee:
Charles W. Bioren - Philadelphia, PA

USPTO Classifications:
81/29

Tool Categories:
screwdrivers : screwdriver mechanisms : ratcheting screwdrivers
tool holders

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
J. B. Crosby
F. Gould

Patent Dates:
Granted: Nov. 20, 1866

Patent Pictures:
USPTO pdf tiff
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