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Patent number:
Patent Date:
US Patent: 894,673
Ratchet mechanism
Patentee:
George O. Leopold (
exact
or
similar
names) - Philadelphia, PA
USPTO Classifications:
193/44
,
74/134
,
74/575
Tool Categories:
screwdrivers
:
screwdriver mechanisms
:
ratcheting screwdrivers
woodworking tools
:
braces
:
ratchet braces
Assignees:
North Brothers Manufacturing Co.
- Philadelphia, PA
Manufacturer:
North Brothers Manufacturing Co.
- Philadelphia, PA
Witnesses:
William A. Barr
Joseph H. Klein
Patent Dates:
Applied:
Feb. 15, 1908
Granted:
Jul. 28, 1908
Patent Pictures:
USPTO
(New site tip)
Google Patents
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