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US Patent: 1,741,349
Screw Driver
Improvement in Screwdriver blades
Patentee:
Ralph R. Sullivan (exact or similar names) - Oakland, CA

USPTO Classifications:
411/408, 411/919, 81/441, D8/86

Tool Categories:
screwdrivers : screwdriver blades

Assignees:
Bridgeport Hardware Mfg. Co. - Bridgeport, CT

Manufacturer:
Bridgeport Hardware Mfg. Co. - Bridgeport, CT

Witnesses:
Unknown

Patent Dates:
Applied: Dec. 28, 1928
Granted: Dec. 31, 1929

Patent Pictures: [ 1 | 2 | 3 | 4 | 5 ]
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Description:
This Patent and two others, 1738405 and 1782981, relate to a serrated/grooved tip, which helps to prevent the slipping off the screw will turning. Sample is marked with Patent #'s 1738405 & 1741349, other Patents pending. Also marked NON-SKID #1 Bridgeport,U.S.A. Also see Patent 267709.

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