Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5244015 | Pipe-end protector | Wilfried Dreyfuss, Kurt Muller | 1993-09-14 |
| 5195562 | Pipe-end protector | Wilfried Dreyfuss, Kurt Muller | 1993-03-23 |
| 4957141 | Pipe-end protector | Wilfried Dreyfuss, Kurt Muller | 1990-09-18 |
| 4772198 | Apparatus for injection-molding threaded plastic caps and stoppers | Wilfried Dreyfuss, Kurt Muller | 1988-09-20 |
| 4706822 | Frame for the transport and for the storage of pipes | Wilfried Dreyfuss, Kurt Muller | 1987-11-17 |
| 4662402 | System for protecting machine threads | Wilfried Dreyfuss, Kurt Muller | 1987-05-05 |
| 4610362 | Frame for the transport and storage of pipes | Wilfried Dreyfuss, Kurt Muller | 1986-09-09 |
| 4599778 | Installing or centering mechanism for pipes to be screwed into one another | Wilfried Dreyfuss, Kurt Muller | 1986-07-15 |
| 4492666 | Method for forming a protective pipe cap | Wilfried Dreyfuss, Kurt Muller | 1985-01-08 |
| 4487229 | System for protecting machine threads | Wilfried Dreyfuss, Kurt Muller | 1984-12-11 |
| 4438783 | Protective device for pipes | Wilfried Dreyfuss, Kurt Muller | 1984-03-27 |