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US Patent: 383,111
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Patentee:
James Duffy - 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 pdf tiff
Google Patents
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"Vintage Machinery" entry for Kehr & Duffy

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