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US Patent: 651,306
Stay Bolt Wrench
Patentee:
Charles Gabriel (exact or similar names) - Chicago, IL

USPTO Classifications:
279/33, 81/111, 81/53.2, 81/DIG.10

Tool Categories:
wrenches

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
E. F. Wilson
Rudolph Wm. Lotz
Patent Dates:
Applied: Sep. 18, 1899
Granted: Jun. 05, 1900

Patent Pictures:
Charles Gabriel patent June 5, 1900
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Description:
The external nut serves only to adjust the gripping cams; the tool is turned by a shank in line with its center.

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