Bridges – Gangway – ramp – or dock leveler – Wheeled
Patent
1993-02-09
1994-08-02
Britts, Ramon S.
Bridges
Gangway, ramp, or dock leveler
Wheeled
414343, 414401, 414537, 414573, B65G 6922, B65G 6928
Patent
active
053333403
ABSTRACT:
Mobile elevatable platform devices are fitted with an impact absorbing bumper, a truck restraining hook mechanism, and, optionally, a ground anchor.
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patent: 4488326 (1984-12-01), Cherry
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patent: 4627375 (1986-12-01), Davis et al.
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patent: 4867277 (1989-09-01), Sloan
patent: 5013204 (1991-05-01), Leon
patent: 5082415 (1992-01-01), Hayashi
patent: 5097770 (1992-03-01), Miyashita et al.
"POWERAMP" Brochure, Systems Inc., Germantown, Wis.
Britts Ramon S.
Lisehora James A.
Tyner Earl L.
Yeager Arthur C.
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