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US Patent: 608,243
Oil-hole cover or cap
Patentee:
Frank D. Winkley - Madison, WI

USPTO Classifications:
137/382, 184/93, 251/297, 251/304

Tool Categories:
industrial machines : industrial machine mechanisms : industrial machine lubrication

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
H. G. Nichols
G. J. Corscot

Patent Dates:
Applied: Sep. 13, 1897
Granted: Aug. 02, 1898

Patent Pictures:
USPTO pdf tiff
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