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Title:
Structural beam with fire extinguisher
United States Patent 2809074
Inventors:
Leonard, Mcdonald James
Publication Date:
10/08/1957
Export Citation:
Click for automatic bibliography generation
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
View Patent Images:
Download PDF 2809074
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US Patent References:
2558946
Reinforced cast structure
2510958
Composite floor of metal and concrete
2241617
Triangular joist
1594505
Trussed girder
1555989
Reenforcement system for concrete structures
1190824
N/A
1011335
N/A
Foreign References:
FR485184A
GB562035A
GB614171A