Title:
Collapsible supporting structures
United States Patent 3336060


Inventors:
Bradford, John G.
Application Number:
US51534765A
Publication Date:
08/15/1967
Filing Date:
12/21/1965
Assignee:
Bradford, John G.
Primary Class:
Other Classes:
5/8, 5/114, 5/626, 5/627, 5/628, 403/322.2, 403/325
International Classes:
A61G1/003; A61G1/007
View Patent Images:
US Patent References:
3007180N/A1961-11-07
2839320Pipe connectors1958-06-17
2394245Foldable stretcher1946-02-05
1347808N/A1920-07-27