U.S. patent number D473,216 [Application Number D/155,521] was granted by the patent office on 2003-04-15 for subwoofer surround and diaphragm assembly. This patent grant is currently assigned to Stillwater Designs & Audio, Inc.. Invention is credited to William O. Doering, Steven M. Irby.
United States Patent | D473,216 |
Irby , et al. | April 15, 2003 |
Inventors: | Irby; Steven M. (Stillwater, OK), Doering; William O. (Stillwater, OK) |
---|---|
Assignee: | Stillwater Designs & Audio,
Inc. (Stillwater, OK) |
Appl. No.: | D/155,521 |
Filed: | February 11, 2002 |
Application Number | Filing Date | Patent Number | Issue Date | ||
---|---|---|---|---|---|
108621 | Jul 30, 1999 | ||||
Current U.S. Class: | D14/222 |
Current International Class: | 1401 |
Field of Search: | ;D14/204,208-216,221-222,224 ;181/148,150,157,168,171-174 ;381/300-302,386,396,398,423,426 |
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