U.S. patent number D254,324 [Application Number 05/830,368] was granted by the patent office on 1980-02-26 for respiratory exerciser and the like. Invention is credited to William H. Thead, Jr..
United States Patent | D254,324 |
Thead, Jr. | February 26, 1980 |
Inventors: | Thead, Jr.; William H. (Atlanta, GA) |
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Appl. No.: | 05/830,368 |
Filed: | September 2, 1977 |
Current U.S. Class: | D24/164; 482/13 |
Current International Class: | D2402 |
Field of Search: | ;D24/17 ;128/2.08,2C,2.5R,145.8 ;272/99 |
D242956 | January 1977 | Miller et al. |
3635214 | January 1972 | Rand et al. |
3695608 | October 1972 | Hanson |
3811671 | May 1974 | Turnbull |
4025070 | May 1977 | McGill et al. |
4086918 | May 1978 | Russo |
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