Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4587874 | Rotary punch | Manfred A. A. Lupke | 1986-05-13 |
| 4510013 | Apparatus for producing multi-walled thermoplastic tubing | Manfred A. A. Lupke | 1985-04-09 |
| 4504206 | Chainless mold drive for a corrugator or the like | Manfred A. A. Lupke | 1985-03-12 |
| 4325685 | Apparatus for producing thermoplastic tubing having interchangeable mold blocks | Manfred A. A. Lupke | 1982-04-20 |
| 4319872 | Apparatus for producing thermoplastic tubing | Manfred A. A. Lupke | 1982-03-16 |
| 4305703 | Composite die assembly for use in the production of thermoplastic tubing | Manfred A. A. Lupke | 1981-12-15 |
| 4292014 | Feed mechanism comprising an endless member configured as a double helix | Manfred A. A. Lupke | 1981-09-29 |
| 4226580 | Apparatus for producing thermoplastic tubing | Manfred A. A. Lupke | 1980-10-07 |
| 4218164 | Apparatus and method for perforating tubing | Manfred A. A. Lupke | 1980-08-19 |
| 4199314 | Apparatus for producing thermoplastic tubing | Manfred A. A. Lupke | 1980-04-22 |