Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4984633 | Nozzle effect protectors, centralizers, and stabilizers and related methods | Michael J. Woodward | 1991-01-15 |
| 4979562 | Float equipment including float collars and modular plugs for well operations | — | 1990-12-25 |
| 4913768 | Process for producing electrical conductor boards | Gerhard D. Wolf, Kirkor Sirinyan, Ulrich von Gizycki, Rudolf Merten | 1990-04-03 |
| 4794986 | Reticulated centralizing apparatus | — | 1989-01-03 |
| 4589495 | Apparatus and method for inserting flow control means into a well casing | William D. Stringfellow | 1986-05-20 |