U.S. patent number D321,419 [Application Number 07/435,290] was granted by the patent office on 1991-11-05 for face mask. This patent grant is currently assigned to Intertech Resources Inc.. Invention is credited to Dean R. Wallace.
United States Patent | D321,419 |
Wallace | November 5, 1991 |
Inventors: | Wallace; Dean R. (Fort Myers, FL) |
---|---|
Assignee: | Intertech Resources Inc.
(Lincolnshire, IL) |
Appl. No.: | 07/435,290 |
Filed: | November 9, 1989 |
Current U.S. Class: | D24/110.4 |
Field of Search: | ;D29/6,7,8 ;128/206.24,206.28,206.26,206.17,207.11,202.23,205.17 |
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D293613 | January 1988 | Wingler |
D305166 | December 1989 | Quinn et al. |
3315674 | April 1967 | Bloom et al. |
3982532 | September 1976 | Halltin et al. |
4062357 | December 1977 | Laerdal |
4337767 | July 1982 | Yahata |
4799477 | January 1989 | Lewis |
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