Title:
Wood grain door backer
Document Type and Number:
United States Patent 3087536

Inventors:
Murphy, George T.
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Sponsored by:
Flash of Genius
Publication Date:
04/30/1963
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Referenced by:
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Assignee:
John, Hill W.
Primary Class:
160/89
Other Classes:
160/90, 248/99, 160/370.100
International Classes:
B61D19/00
US Patent References:
1895625Grain door
1903065Sectional door
2116260Grain door for railway cars
2203107Grain door for railway cars
2293246Reinforced vulcanized fiber backing belt
2561781Method for making reinforced laminated material
2599443Closure means for grain car doorways
2646117Storm window structure
2653090Glass strand reinforced paper
2689608Flexible grain door for closed cars
2708177Laminated paper product
2738006Flexible closure for cars and the like
2803299Grain door for a railway car


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