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US Patent: 1,541,409
Lubricating Coupling
Patentee:
Frank D. Winkley (exact or similar names) - Madison, Dane County, WI

USPTO Classifications:
251/149.5

Tool Categories:
industrial tools : tool lubricators

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Applied: Jan. 02, 1920
Granted: Jun. 09, 1925

Patent Pictures:
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