Issued Patents 2002
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D465566 | Room air purifier device | Richard T. Briggs, William Schuettenberg, William O'Hara, Vincent G. Lobdell, Scott W. Osiecki +2 more | 2002-11-12 |
| D462754 | Room air purifier device | Richard T. Briggs, William Schuettenberg, William O'Hara, Vincent G. Lobdell, Scott W. Osiecki +2 more | 2002-09-10 |
| 6413301 | Electronically enhanced media air filtration system and method of assembling | William O'Hara, Richard T. Briggs, Herbert Hildebrandt, Richard H. Chapman, Robert S. Englert +4 more | 2002-07-02 |
| 6368391 | Electronically enhanced media air filtration system | William O'Hara, Richard T. Briggs, Herbert Hildebrandt, Richard H. Chapman, Robert S. Englert +4 more | 2002-04-09 |