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US Patent: 105,913
Improvement in pump-valve
Patentee:
Nathan T. Coffin (exact or similar names) - Knightstown, IN

USPTO Classifications:
137/855

Tool Categories:

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Daniel W. Kuefler
O. F. Mayhew
Patent Dates:
Granted: Aug. 02, 1870

Patent Pictures:
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