BASCULE BRIDGE
United States Patent 3548434
US Patent References:
/1302302.html
- - 1302302

Drawbridge
- - 1519189

Bridge
- - 1680821


Inventors:
Overson, Reed
Publication Date:
12/22/1970
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Assignee:
Army US.
Primary Class:
14/36
International Classes:
E01D15/06; E01D15/00; E01D15/06




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