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Patent number:
Patent Date:
US Patent: 399,470
Lifting-jack
Patentee:
Josiah Barrett (
exact
or
similar
names) - Allegheny, PA
USPTO Classifications:
254/111
,
74/169
Tool Categories:
metalworking tools
:
lifting jacks
Assignees:
Duff Mfg. Co., Ltd.
- Allegheny, PA
Manufacturer:
Duff Mfg. Co., Ltd.
- Allegheny, PA
Witnesses:
Darwin S. Wolcott
R. H. Whittlesey
Patent Dates:
Applied:
Jan. 02, 1885
Granted:
Mar. 12, 1889
Reissue Information:
Reissued as
RE11,051
(Dec. 31, 1889)
Patent Pictures:
USPTO
(New site tip)
Google Patents
Report data errors or omissions to steward Jeff Joslin
Vintage Machinery entry for Duff Mfg. Co.
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