Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5062912 | Method and apparatus for fabricating a seamless hollow rubber core for a ball | — | 1991-11-05 |
| 4853056 | Method of making tennis ball with a single core and cover bonding cure | — | 1989-08-01 |
| 4765853 | Method of making a pressurized ball | — | 1988-08-23 |
| 4552142 | Ventilator system having a control valve in the ventilator circuit | Harry Benford | 1985-11-12 |
| 4524805 | Normally closed duckbill valve and method of manufacture | — | 1985-06-25 |
| 4428478 | Self-limiting pump | — | 1984-01-31 |
| 4327912 | Tennis ball | — | 1982-05-04 |
| 4240630 | Game ball check valve | — | 1980-12-23 |