Title:
Hydraulic operating system for opening bridges
United States Patent 3308496
US Patent References:
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- - 2644971

Adjustable loading ramp
- - 2714735

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- - 2724135

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- - 2846703

Tower raising mechanism
- - 2887191


Inventors:
Mooney, George G.
Driver, Earnest C.
Publication Date:
03/14/1967
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Assignee:
BASCULE DESIGN CONSULTANTS INC
Primary Class:
14/36
International Classes:
E01D15/06; E01D15/00
US Patent References:
2993219Adjustable loading ramp
3175238Adjustable loading ramp
Foreign References:
RU140443A
CH217662A