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US Patent: 642,860
Oil-hole cover or cap
Patentee:
Frank D. Winkley - Madison, WI

USPTO Classifications:
184/93

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

Assignees:
None

Manufacturer:
Winkley Co. - Hartford, CT

Witnesses:
Frank J. Shealy
Charles N. Brown

Patent Dates:
Applied: Apr. 12, 1899
Granted: Feb. 06, 1900

Patent Pictures:
USPTO pdf tiff
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