Design column and door system for highway trailers

Land vehicles: bodies and tops – Bodies – Body shell

Patent

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Details

296155, B60J 504

Patent

active

046520422

ABSTRACT:
This invention is a truck trailer door system around all sides thereof, including a plurality of vertically telescopic doors supported on telescopic cylinders located in stationary columns located between the doors.

REFERENCES:
patent: 2057850 (1936-10-01), Sims
patent: 2623779 (1952-12-01), Catell
patent: 2967567 (1961-01-01), Heckerman
patent: 3572815 (1971-03-01), Hackney
patent: 3698465 (1972-10-01), Aberg
patent: 3960196 (1976-06-01), Berner

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