Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6216801 | Method and apparatus for providing proportional injection of additives into drilling fluids | — | 2001-04-17 |
| 4749059 | Apparatus and method for lubricating cables | Gene C. Weitz | 1988-06-07 |
| 4522733 | Substantially neutral aqueous lubricant | — | 1985-06-11 |
| 4475629 | Method and apparatus for selectively metering and spreading lubricant in a conduit | — | 1984-10-09 |
| 4461712 | Substantially neutral aqueous lubricant | — | 1984-07-24 |
| 4185809 | Method and apparatus for pulling lightweight cable | — | 1980-01-29 |