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Patent number:
Patent Date:
US Patent: 383,111
Tube Expander
Patentee:
James Duffy (
exact
or
similar
names) - Buffalo, Erie County, NY
USPTO Classifications:
30/106
,
30/10672
,
72/118
Tool Categories:
specialty tools
:
boiler repair tools
Assignees:
None
Manufacturer:
Not known to have been produced
Witnesses:
Carl F. Geyer
F. C. Geyer
Theodore L. Popps
George J. Buchheit, Jr.
Patent Dates:
Applied:
Sep. 01, 1887
Granted:
May 22, 1888
Patent Pictures:
USPTO
(New site tip)
Google Patents
Report data errors or omissions to steward Joel Havens
"Vintage Machinery" entry for Kehr & Duffy
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