Screwdriver

Details Screwdriver Screwdriver

1986-07-11

1990-04-17

Holtje, Nelson C.

Tools and hardware

Other tools and implements

Screwdriver type

D 8 83

Patent

active

D03072363

REFERENCES:
patent: D143931 (1946-02-01), Odlum
patent: D256882 (1980-09-01), Jansson
patent: 1447832 (1923-03-01), Bailey
patent: 3586080 (1971-06-01), Slany
Stanley Tools Brochure, #66-201 Assortment of Triangular Grip Drivers.
Fiskars Brochure, Power-Grip Plus 900 Series Screwdriver.
Techni-Tool Catalog #28, .COPYRGT.1984, p. 38, Magnetic Torx Screwdriver #490SC020.

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