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US Patent: 91,635
Improvement in grooving-machine
Patentee:
Thomas Holt - Brooklyn, NY

USPTO Classifications:
144/133.1, 144/149

Tool Categories:
woodworking machines : joint making machines : dado machines

Assignees:
Abram T. Merwin - Brooklyn, NY

Manufacturer:
Not known to have been produced

Witnesses:
Alexander F. Roberts
Frank Blockley

Patent Dates:
Granted: Jun. 22, 1869

Patent Pictures:
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