Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4568112 | Pipe joint restrainer glands | Jack Burkholder, Earl F. Bullock | 1986-02-04 |
| 4545707 | Drilling device for pipe joints | John vander Linden | 1985-10-08 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4568112 | Pipe joint restrainer glands | Jack Burkholder, Earl F. Bullock | 1986-02-04 |
| 4545707 | Drilling device for pipe joints | John vander Linden | 1985-10-08 |