Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4845795 | Automatic cleaning device | Alan Crawford, Allan B. Johnson | 1989-07-11 |
| 4827550 | Removable head mechanism for automatic cleaning device | Cleve A. Graham | 1989-05-09 |
| 4588130 | Showerhead | Joseph G. Mammoser | 1986-05-13 |
| 4534340 | Combination handle | Ronald R. Kerr, David W. Smith | 1985-08-13 |
| 4474739 | Method for removing gaseous pollutants in highly dilute concentrations from air at room temperatures | Victor F. Zackay, William G. Lloyd, Donald R. Rowe, Gerald T. Swanson | 1984-10-02 |
| 4442831 | On/off handle for oral hygiene apparatus | — | 1984-04-17 |
| 4374354 | Rechargeable electric portable appliance | John Petrovic | 1983-02-15 |
| 4303201 | Showering system | Christopher W. Elkins, David W. Smith | 1981-12-01 |
| 4273142 | Smoking filters | Gerald T. Swanson | 1981-06-16 |