Combined call button indicator and wall plate for elevators

Details Combined call button indicator and wall plate for elevators Combined call button indicator and wall plate for elevators

1996-06-18

1998-03-31

Jackson, Marcus A.

Measuring, testing, or signalling instruments

Security or signal instrument or casing

Elevator signal or call unit

1005

Patent

active

D03929078

REFERENCES:
patent: D155871 (1949-11-01), Brounn et al.
patent: D176279 (1955-12-01), Patriguin
patent: D186890 (1959-12-01), Brounn
patent: D268026 (1983-02-01), Bevilaqua et al.
patent: D318632 (1991-07-01), Polacek et al.
patent: D324511 (1992-03-01), Ginther et al.
Elevator World, Feb. 1992, p. 82, advertisement by E.S. Elevator Specialties.
Sugarloaf, E. S. Elevator Specialties, 1 page, date at least as early as Feb. 1992.
The Laborsaver Button Station, Regency Elevator Products Corporation, 2 pages, date at least as early as Apr. 1992.

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