Issued Patents All Time
Showing 1–21 of 21 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4947669 | Apparatus for providing tubing with at least one internal spinal fin | — | 1990-08-14 |
| 4942751 | Process and apparatus for forming internally enhanced tubing | — | 1990-07-24 |
| 4751058 | Temperature compensated pressure vessel | — | 1988-06-14 |
| 4703639 | Apparatus and process for forced lubrication piercing | — | 1987-11-03 |
| 4702096 | Apparatus and process for providing tubing with at least one internal spiral groove or fin | — | 1987-10-27 |
| 4687422 | Continuous extrusion apparatus | — | 1987-08-18 |
| 4644775 | Shell forming apparatus and process | — | 1987-02-24 |
| 4633699 | Continuous extrusion apparatus | — | 1987-01-06 |
| 4546634 | Methods and apparatus for initiating tubular extrusion | — | 1985-10-15 |
| 4528832 | Methods and apparatus for increasing the efficiency of tubing extrusion | — | 1985-07-16 |
| 4523444 | Methods of and apparatus for controlling the gap between a mandrel and die during extrusion | — | 1985-06-18 |
| 4514121 | Chamfering apparatus | — | 1985-04-30 |
| 4484689 | Axially segmented pressure vessel | — | 1984-11-27 |
| 4449297 | Clipping apparatus | Dorothy J. Fuchs | 1984-05-22 |
| 4425775 | Methods for extrusion | — | 1984-01-17 |
| 4393917 | Methods and apparatus for casting and extruding material | — | 1983-07-19 |
| 4377943 | Extrusion die | — | 1983-03-29 |
| 4333649 | Racket string clamp | George A. Vaughn | 1982-06-08 |
| 4325354 | Energy conversion apparatus | — | 1982-04-20 |
| 4319476 | Methods and apparatus for extrusion | — | 1982-03-16 |
| 4212177 | Apparatus for continuous extrusion | — | 1980-07-15 |