| 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 |