Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5607224 | Plastic niche and grounding assembly therefor | Donald R. Davidson, Robert H. Hanes | 1997-03-04 |
| 5493811 | Plant watering method and apparatus | Michael Tobias | 1996-02-27 |
| 5432688 | Plastic niche and grounding assembly therefor | Donald R. Davidson, Robert H. Hanes | 1995-07-11 |
| 5271561 | Rotary jet hydrotherapy device and method | Robert M. Messinger, Donald R. Davidson | 1993-12-21 |
| D333341 | Multi-port valve handle | Fred Hollinger | 1993-02-16 |
| 5115974 | Apparatus for providing a waterfall or a fountain | Fred Hollinger | 1992-05-26 |
| 5068033 | Underdrain assembly with pivotally-mounted and lockable laterals | Fred Hazlehurst | 1991-11-26 |
| 4985943 | Two-stage adjustable hydrotherapeutic jet and method | Robert M. Messinger | 1991-01-22 |
| 4982460 | Flow enhancing jet fitting | William E. Treene, George Williams | 1991-01-08 |
| 4967696 | Dog collar | — | 1990-11-06 |
| 4941217 | Flow enhancing jet fitting | William E. Treene, George Williams | 1990-07-17 |
| 4818389 | Skimmer with flow enhancer | Thomas F. Pinelli, Robert M. Messinger, Fred Hazlehurst | 1989-04-04 |
| 4742965 | Hydrotherapy fitting assembly | Robert M. Messinger | 1988-05-10 |
| 4629557 | Pump test ring, cover and strainer and method of providing a pressure-testable pump | — | 1986-12-16 |
| 4617117 | Housing assembly with removable jacked cover | Robert M. Messinger | 1986-10-14 |
| 4593420 | Self-draining hydromassage fitting | Robert M. Messinger | 1986-06-10 |