Metal roof-supporting construction
United States Patent 3092221
US Patent References:
/1225727.html
- - 1225727

Metal sash and method of making same
- - 1843356

Portable shelter
- - 2549816

Ceiling construction
- - 2689630

Canopy structure
- - 2692033


Inventors:
Parsons, Robert L.
Bays, Grover H.
Publication Date:
06/04/1963
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Assignee:
PARKERSBURG AETNA CORP
Primary Class:
52/90.100
Other Classes:
52/639, 52/669, 52/94, 52/665
International Classes:
E04B1/58; E04B7/02; E04C2/14; E04C2/10
US Patent References:
2722901Roof structure
2815831Column and rafter assembly for rigid frame buildings
2871997Low pitch rigid frame building
2903104T joint
Foreign References:
IT434281B