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Patent number:
Patent Date:
US Patent: 57,966
Improvement in screws
Patentee:
Treat T. Prosser (
exact
or
similar
names) - Chicago, IL
USPTO Classifications:
411/423
,
411/425
Tool Categories:
Assignees:
G. W. Gillett
- Unknown, Unknown
J. A. Eastman
- Unknown, Unknown
D. W. Wells
- Unknown, Unknown
D. A. Kimbark
- Unknown, Unknown
Treat T. Prosser
- Chicago, IL
Manufacturer:
Not known to have been produced
Witnesses:
H. H. Evarts
P. A. Hoyne
Patent Dates:
Granted:
Sep. 11, 1866
Patent Pictures:
USPTO
(New site tip)
Google Patents
Report data errors or omissions to steward Jeff Joslin
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