Title: Roofing panel system

Abstract: A formed panel having a relatively thin headlap underlay portion and a relatively thick exposure overlay portion with water control channels and built-in assembly guides.

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Inventors: Carothers, Paul A. (Carmichael, CA, US)

Application Number: 494847
Filing Date: 1974-08-05
Publication_date: 1976-03-16
Assignee: Carothers; Paul A. (Berkeley, CA); Jones; Rodney V. (Berkeley, CA); McCoy; Ernest H. (Berkeley, CA)
Primary Class(es): 52/309.4 52/533, 52/539, 52/555
Other Classes:
US Patent Ref:

1439435	Dec, 1922	Munro	52/553.
1545212	Jul, 1925	Stowe	52/520.
1872185	Aug, 1932	Reade	52/105.
2037507	Apr, 1936	Fischer	52/557.
2071229	Feb, 1937	Heppes et al.	52/553.
2113644	Apr, 1938	Bollaert	52/518.
2115172	Apr, 1938	Kirschbraun	52/555.
2156566	May, 1939	Kirschbraun	52/506.
2224351	Dec, 1940	Kaye	52/314.
2660217	Nov, 1953	Lawson	52/558.
3527004	Sep, 1970	Sorensen	52/98.
3797179	Mar, 1974	Jackson	52/558.
3852934	Dec, 1974	Kirkhuff	52/560.

Other Refs: 835,089

May, 1960	UK

Primary Examiner: Murtagh, John E.
Assistant Examiner: Ridgill, Jr., James L.
Attorney: Bruce & McCoy