Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11566639 | Servo valve unit and apparatus | — | 2023-01-31 |
| 11181129 | Rotary drive device and control method thereof | — | 2021-11-23 |
| 5761762 | Cleaner and bowling maintenance machine using the same | — | 1998-06-09 |
| 5713716 | Lifter for bowling lane maintenance machine and method of using the same | — | 1998-02-03 |
| 5219412 | Method and apparatus of moving bowling-lane maintenance machine | — | 1993-06-15 |
| 5133280 | Liquid flow control device in bowling lane maintenance system | — | 1992-07-28 |
| 5129421 | Two-position and three-way valve | — | 1992-07-14 |
| 5024248 | Two-position and three-way valve | — | 1991-06-18 |
| 4908898 | Cleaning roller in bowling lane maintenance system | — | 1990-03-20 |
| 4766016 | Method of apparatus of applying a liquid to a plane surface | — | 1988-08-23 |
| 4738000 | Bowling lane maintenance apparatus | — | 1988-04-19 |
| 4727615 | Bowling lane maintenance apparatus | — | 1988-03-01 |
| 4708603 | Variable displacement pump | — | 1987-11-24 |