Pair of escalator control boxes

Details Pair of escalator control boxes Pair of escalator control boxes

1985-02-08

1988-11-01

Burke, Wallace R.

Material or article handling equipment

Conveying, lifting, or transferring article

Mobile stair

Patent

active

D02983753

REFERENCES:
patent: 3910400 (1975-10-01), Hishitani
patent: 3970187 (1976-07-01), Esaki et al.
patent: 3989133 (1976-11-01), Courson et al.
patent: 4619355 (1986-10-01), Adrian et al.

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