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US Patent: 2,472,673
Screw Driver Having Expanding Screw Holding Bit
Screw holding screwdriver
Patentee:
Edward L. Millen (exact or similar names) - Brookline, MA

USPTO Classifications:
81/443

Tool Categories:
screwdrivers : screwdriver blades

Assignees:
None

Manufacturer:
Millen Manufacturing Co. - Boston, MA

Witnesses:
Unknown

Patent Dates:
Applied: Oct. 11, 1945
Granted: Jun. 07, 1949

Patent Pictures: [ 1 | 2 | 3 ]
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Description:
This a improvement of 1699306, by adding hook to the back end of the screwdriver blade which keeps the screw holding portion of the blade in the recessed position. Also possibly to protect the earlier patent. Sample marked Jiffy-Tite #6, Pat. & Pat. Pending

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