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US Patent: 1,930,343
Clamp tightening machine
Patentee:
John M. Hargrave (exact or similar names) - Cincinnati, OH

USPTO Classifications:
269/152, 269/26, 81/56, 81/57.24

Tool Categories:
work holding : clamps : clamp carriers

Assignees:
None

Manufacturer:
Cincinnati Tool Co. - Cincinnati, OH

Witnesses:
Unknown

Patent Dates:
Applied: Aug. 13, 1929
Granted: Oct. 10, 1933

Patent Pictures:
USPTO (New site tip)
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Report data errors or omissions to steward Carl Matthews
Description:
Inventor Hargrave was the president of Cincinnati Tool Co.

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