Tools and hardware – Other tools and implements – Screwdriver type
Patent
1986-02-21
1988-06-21
Burke, Wallace R.
Tools and hardware
Other tools and implements
Screwdriver type
D 8107
Patent
active
D02962969
REFERENCES:
patent: D113158 (1939-01-01), Cashmore
patent: D260599 (1981-09-01), Wong
patent: D278971 (1985-05-01), Smith et al.
patent: 3080900 (1963-03-01), Rosenberg
Hardware Age, May 1959, p. 21 "Power-Egg Ratchet Screw Driver".
Burke Wallace R.
Hip Shing Fat Company, Ltd.
Vinson Brian N.
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