Combined face plate and push button actuator of controlling an e

Details Combined face plate and push button actuator of controlling an e Combined face plate and push button actuator of controlling an e

1990-02-28

1993-09-21

Burke, Wallace R.

Measuring, testing, or signalling instruments

Security or signal instrument or casing

Elevator signal or call unit

D13171

Patent

active

D03395430

REFERENCES:
patent: D197278 (1964-01-01), Stevenson
patent: D203184 (1965-12-01), Stevenson
patent: D205357 (1966-07-01), Stevenson
patent: D226384 (1973-02-01), Johnson
patent: D253940 (1980-01-01), Bedel
patent: D307579 (1990-05-01), Layne et al.
patent: 4359614 (1982-11-01), Green et al.
patent: 4409450 (1983-01-01), Blades
patent: 4937408 (1990-06-01), Hattori et al.
patent: 4967046 (1990-10-01), Priesemuth

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