U.S. patent number D326,330 [Application Number 07/174,021] was granted by the patent office on 1992-05-19 for shingle. This patent grant is currently assigned to CertainTeed Corporation. Invention is credited to John R. Klein, deceased.
United States Patent | D326,330 |
Klein, deceased | May 19, 1992 |
Inventors: | Klein, deceased; John R. (late of Malvern, PA) |
---|---|
Assignee: | CertainTeed Corporation (Valley
Forge, PA) |
Appl. No.: | 07/174,021 |
Filed: | March 28, 1988 |
Current U.S. Class: | D25/139 |
Field of Search: | ;D25/138,139,140,141,142,143 ;52/518,519,521,523,553,554,557,558,559,535,314 |
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