US Patent: 109,591 - Improvement in machines for making key-boards for wood pavements


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US Patent: 109,591

Improvement in machines for making key-boards for wood pavements

Patentee:

Perley D. Cummings (exact or similar names) - Portland, ME

USPTO Classifications:

Tool Categories:

Assignees:

None

Manufacturer:

Not known to have been produced

Witnesses:

Patent Dates:
Granted:	Nov. 29, 1870

Patent Pictures: