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US Patent: 74,128
Improvement in Floor Clamps
Patentees:
Warren Portlock (exact or similar names) - Pleasant Grove, IA
John H. Smith (exact or similar names) - Toolesborough, IA

USPTO Classifications:
254/17

Tool Categories:
work holding : clamps : floor clamps

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
E. Kretchmer
George Zier
Patent Dates:
Granted: Feb. 04, 1868

Patent Pictures: [ 1 | 2 ]
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