U.S. patent number D446,317 [Application Number D/112,614] was granted by the patent office on 2001-08-07 for crawl space door and frame with exterior flange. Invention is credited to James S. Jackson, William G. Sykes.
United States Patent | D446,317 |
Jackson , et al. | August 7, 2001 |
Inventors: | Jackson; James S. (Portsmouth, VA), Sykes; William G. (Virginia Beach, VA) |
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Appl. No.: | D/112,614 |
Filed: | October 20, 1999 |
Current U.S. Class: | D25/48.3 |
Current International Class: | 2502 |
Field of Search: | ;D25/48,47,49,52,60-61 ;52/169.1,169.6,169.12,302.1,302.7,303.3,202,211 ;454/195 ;49/504 ;269/905 |
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"Access Panel Doors"; #701-E, #702, #701, p. 20; Sweet's Catalog, 1962; manufactured by Hohmann & Barnard, Inc.; Woodside NY.* . "NB Roof Scuttle for Steep Stair", p. 6, Bilco Doors for Special Services catalog, 1981.. |
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