Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10811858 | Dead-end shoe apparatus and methods of use thereof | — | 2020-10-20 |
| 10673220 | Electric current conducting assembly | — | 2020-06-02 |
| 4633904 | Prevention of water hammer in rotary valve for interconnecting conduits | David L. Schick | 1987-01-06 |
| 4625763 | Disc-axial multiport valve | David L. Schick, Charles A. Dolejs | 1986-12-02 |
| 4574840 | Multiport axial valve with balanced rotor | Charles A. Dolejs, David L. Schick | 1986-03-11 |
| 4569371 | Axial multiport rotary valve | Charles A. Dolejs, David L. Schick | 1986-02-11 |