Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4795201 | Knotting method for baler | Hubert Prellwitz, Christian Steglich, Astrid Kruger | 1989-01-03 |
| 4785730 | Needle-protecting system for baler | Karl-Heinz Kretschmer, Jurgen Rollich, Boto Kritzner, Gerhard Schindler, Egon Vilbrandt +1 more | 1988-11-22 |
| 4714204 | Impeller-type cutter drum for a chopper | Karl-Heinz Kretschmer, Jurgen Rollich | 1987-12-22 |
| 4592514 | Field chopper with adjustable fan assist | Karl-Heinz Kretschmer, Horst Schumacher, Jurgen Rollich | 1986-06-03 |
| 4525751 | Disc record with tapered groove | Edward J. Freeman, John Economou, John G. Pecorari, Jerome Barth Halter, Jack E. James +2 more | 1985-06-25 |
| 4431487 | Matrixing apparatus and method for use in the manufacture of molded records | Charles A. Weaver, Donald J. Wierschke | 1984-02-14 |
| 4429678 | Cutting stylus for mechanically cutting masters for keel-lapping | James H. Rainey, Pierre V. Valembois | 1984-02-07 |
| 4341952 | Variable pitch grooved label for video disc | Philip M. Heyman, David P. Bortfeld | 1982-07-27 |