U.S. patent number D368,309 [Application Number D/026,590] was granted by the patent office on 1996-03-26 for earplug for a hearing aid. This patent grant is currently assigned to Rion Kabushiki Kaisha. Invention is credited to Yoshiyuki Narisawa.
United States Patent | D368,309 |
Narisawa | March 26, 1996 |
Inventors: | Narisawa; Yoshiyuki (Kokubunji, JP) |
---|---|
Assignee: | Rion Kabushiki Kaisha (Tokyo,
JP) |
Appl. No.: | D/026,590 |
Filed: | August 1, 1994 |
Current U.S. Class: | D24/106; D24/174 |
Field of Search: | ;D24/106,174 ;128/864,865,866,867,868 ;181/130,135 |
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D272946 | March 1984 | Scanlon |
2246737 | June 1941 | Knudsen |
3061689 | October 1962 | McCarrell et al. |
3415246 | October 1968 | Hill |
5046580 | September 1991 | Barton |
5332871 | July 1994 | Carrigan |
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