Material or article handling equipment – Conveying – lifting – or transferring article – Mobile stair
Patent
1993-07-09
1994-07-12
Burke, Wallace R.
Material or article handling equipment
Conveying, lifting, or transferring article
Mobile stair
Patent
active
D03487563
REFERENCES:
patent: D296374 (1988-06-01), Hermann et al.
patent: D298375 (1988-11-01), Hermann
patent: D318357 (1991-07-01), Adrian et al.
patent: D344384 (1994-02-01), Yamamoto et al.
patent: 3970187 (1976-07-01), Esaki et al.
patent: 3989133 (1976-11-01), Courson et al.
patent: 5156252 (1992-10-01), Mello et al.
Adrian Willy
Barrett Dale R.
Johnson Gerald E.
Laliberte Ronald
Pitts John T.
Burke Wallace R.
Otis Elevator Company
Taylor Robin V.
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