Lever adaptor for door knobs

Details Lever adaptor for door knobs Lever adaptor for door knobs

1994-05-13

1999-02-09

Bullock, B. J.

Tools and hardware

Handle, knob or pull

Element or attachment

D8308, 0806

Patent

active

D04053443

REFERENCES:
patent: D219861 (1971-02-01), Coffman
patent: D268984 (1983-05-01), Bergen
patent: D363423 (1995-10-01), Fennell et al.
patent: 4285536 (1981-08-01), McCoy et al.
patent: 4397489 (1983-08-01), Lind
patent: 4504087 (1985-03-01), Pennington
patent: 4648643 (1987-03-01), Bettger
patent: 4783883 (1988-11-01), Szalay
patent: 4971375 (1990-11-01), Grecco
patent: 5231731 (1993-08-01), Jones
patent: 5375295 (1994-12-01), Woodward
Brochure distributed by American Inventors Corporation approximately during Feb. 1991.

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