Triangular screwdriver handle

Tools and hardware – Other tools and implements – Screwdriver type

Patent

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Details

D8107, 0804

Patent

active

D03985075

REFERENCES:
patent: D143931 (1946-02-01), Odlum
patent: D197501 (1964-02-01), Huxtable
patent: D201171 (1965-05-01), Knudsen et al.
patent: D244747 (1977-06-01), Solf
patent: D256547 (1980-08-01), Holland-Letz
patent: D256882 (1980-09-01), Jansson
patent: D261980 (1981-11-01), Fee et al.
patent: D270706 (1983-09-01), Cleminshaw
patent: D307236 (1990-04-01), Cascio et al.
patent: D309246 (1990-07-01), Cascio et al.
patent: D312563 (1990-12-01), Hillinger
patent: D360344 (1995-07-01), Eggert et al.
patent: D375669 (1996-11-01), Shiao
patent: 1447832 (1923-03-01), Bailey
patent: 3026920 (1962-03-01), York
patent: 3463209 (1969-08-01), Podolsky
patent: 3586080 (1971-06-01), Slany
patent: 4951533 (1990-08-01), Hillinger
Copies of photographs of TOPLUS three-sided tool handle.
Copies of photographs of four-sided tool handle with teardrop-shaped design on each side.
Copies of photographs of four-sided tool handle with ribs on each side.
Proto Tool catalog page, "Screwdrivers" 1969.
Techni-Tool catalog page, "AISI 6150 Chrome Van" 1984.

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