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US Patent: 924,999
Screw Driver
Screw holding screwdriver
Patentee:
Carl Kummer (exact or similar names) - Hampshire, IL

USPTO Classifications:
81/453

Tool Categories:
screwdrivers : screwdriver blades

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Charles W. Johnson
Charles S. Backus
Patent Dates:
Applied: May 16, 1907
Granted: Jun. 15, 1909

Patent Pictures:
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