US Patent: 62,477 - Improvement in lock-up safety-valves


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US Patent: 62,477

Improvement in lock-up safety-valves

Patentees:

Daniel G. Coppin (exact or similar names) - Cincinnati, OH

Gilbert H. Clemens (exact or similar names) - Cincinnati, OH

USPTO Classifications:

Tool Categories:

Assignees:

None

Manufacturer:

Not known to have been produced

Witnesses:

Patent Dates:
Granted:	Feb. 26, 1867

Patent Pictures:

Description:

Of interest because co-inventor Clemens also held sawmill patents.