Open plate floor
United States Patent 2689366
US Patent References:
/1089613.html
- - 1089613

/1098243.html
- - 1098243

Grating
- - 1953657

Metallic flooring
- - 2050935

Grating and like structure
- - 2190214


Inventors:
Wichert, Ernest M.
Publication Date:
09/21/1954
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Assignee:
Wichert, Ernest M.
Primary Class:
14/73
Other Classes:
52/180, 52/630
International Classes:
E04C2/42; E04C2/30
US Patent References:
2241512Bridge deck or floor
2269522Highway grating
2308943Bridge and flooring therefor