Lock light

Details Lock light Lock light

1976-09-08

1978-03-07

Griffin, Donald A.

Illumination

Door knob or keyhole illuminator

E05B 1710

Patent

active

040782484

ABSTRACT:
Keyhole illumination for a tumbler and cylinder lock comprising a miniature light source and a light transmitting pin in the pin holes.

REFERENCES:
patent: 2226854 (1940-12-01), Gohn
patent: 2242626 (1941-05-01), Silker
patent: 2701297 (1955-02-01), Thibault
patent: 2709745 (1955-05-01), Sundt
patent: 2767303 (1956-10-01), Rommey et al.
patent: 2831959 (1958-04-01), Jefferson
patent: 3719821 (1973-03-01), Foreman
patent: 3887803 (1975-06-01), Savage
patent: 3955075 (1976-05-01), Susedik
patent: 3958113 (1976-05-01), Termohlen

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