Screwdriver

Details Screwdriver Screwdriver

1994-12-01

1996-07-23

Hyder, Philip S.

Tools and hardware

Other tools and implements

Screwdriver type

Patent

active

D03719464

REFERENCES:
patent: D22633 (1893-07-01), Hutchinson
patent: D41896 (1911-11-01), Roberts
patent: D100612 (1936-08-01), Bryant
patent: D142267 (1945-08-01), Walraven
patent: D309246 (1990-07-01), Cascio et al.
patent: 2123393 (1938-07-01), Windsor
patent: 2431628 (1947-11-01), Waarich
patent: 2737988 (1956-03-01), Gearhart et al.
patent: 3289290 (1966-12-01), Sandor
patent: 3293978 (1966-12-01), Handley
patent: 3687179 (1972-08-01), Totsu
patent: 3891017 (1978-06-01), Iskra
patent: 4325153 (1982-04-01), Finnegan
patent: 4680996 (1987-07-01), Gold
Sears Catalog, 1960, p. 16 Dunlap Scredriver Set.
Stanley Tools Catalog, Nov. 27, 1972, p. 85.

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