Keypad

Details Keypad Keypad

1994-07-13

1996-09-24

Sincavage, Joel

Equipment for production, distribution, or transformation of ene

Distribution, modification or control

Switch or casing therefor

Patent

active

D03739988

REFERENCES:
patent: D292404 (1987-10-01), Wilson et al.
patent: D305018 (1989-12-01), Pena et al.
patent: D310660 (1990-09-01), Ishida
patent: 4284866 (1981-08-01), Bryce et al.
patent: 4365130 (1982-12-01), Christensen
patent: 4450324 (1984-05-01), Fukukura
patent: 4460810 (1984-07-01), Fukukura
patent: 4609792 (1986-09-01), Levasseur
patent: 4710597 (1987-12-01), Loheac
Schlage remote control 71109SCH on p. 422 of B. A. Paragh catalog, Jun. 12, 1990.
Varco-Pruden transmitter, in use before May 3, 1988.

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