US Patent: 79,272 - Improvement in Instruments for Adding and Registering Numbers


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US Patent: 79,272

Improvement in Instruments for Adding and Registering Numbers

Patentees:

Nelson Spofford (exact or similar names) - Haverhill, MA

Charles Corliss (exact or similar names) - Haverhill, MA

USPTO Classifications:

Tool Categories:

Assignees:

Charles Corliss - Haverhill, MA

Manufacturer:

Not known to have been produced

Witnesses:

Patent Dates:
Granted:	Jun. 23, 1868

Patent Pictures: