FOLDABLE STRESSED SKIN STRUCTURE
United States Patent 3443344
US Patent References:
/1247511.html
- - 1247511
Method of making metal bellows
- - 2534123
Umbrella
- - 2667884
/1247511.html
- - 1247511
Method of making metal bellows
- - 2534123
Umbrella
- - 2667884
Inventors:
Williams Jr., Charles W.
Publication Date:
05/13/1969
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Export Citation:
Assignee:
Charles Jr., Williams W.
Primary Class:
Other Classes:
52/91.100, D25/56, 52/64, 29/897.300, D25/27
International Classes:
E04B1/343; E04B1/346; E04B7/16; E04B7/12
Foreign References:
| AU214576B | ||||
| CA653204A | ||||
| DE1162042B | ||||
| IT607547B |