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US Patent: 687,836
Clamp
Hand-Screw Clamp
Patentee:
Hans Jorgensen - Chicago, IL

USPTO Classifications:
269/220, 269/242

Tool Categories:
work holding : clamps : hand screws

Assignees:
None

Manufacturer:
Adjustable Clamp Co. - Chicago, IL

Witnesses:
Rudolph William Lotz
John Snowhook

Patent Dates:
Applied: Aug. 30, 1901
Granted: Dec. 03, 1901

Patent Pictures: [ 1 | 2 ]
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Description:
See Holman's January 17, 1922 patent (No. 1403958) for a later improvement.

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