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US Patent: 91,385
Centre Square
Patentee:
M. J. Trowbridge (exact or similar names) - Cazenovia, NY

USPTO Classifications:
33/455

Tool Categories:
layout tools : special purpose gauges

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
J. W. Howson
W. S. Howson
Patent Dates:
Granted: Jun. 15, 1869

Patent Pictures:
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