Title:
Structural beam with fire extinguisher
United States Patent 2809074
Inventors:
Leonard, Mcdonald James
Publication Date:
10/08/1957
Export Citation:
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Assignee:
Leonard, Mcdonald James
Primary Class:
239/209
Other Classes:
52/168, 52/223.12, 52/639, 52/650.1, 52/694, 169/5, 169/16, 239/550
International Classes:
A62C3/00; E04B1/94; E04C3/08; E04C3/10; E04C3/294; E04C3/04; A62C3/00; E04B1/94; E04C3/04; E04C3/29
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US Patent References:
2558946Reinforced cast structure
2510958Composite floor of metal and concrete
2241617Triangular joist
1594505Trussed girder
1555989Reenforcement system for concrete structures
1190824N/A
1011335N/A
Foreign References:
FR485184A
GB562035A
GB614171A