Issued Patents All Time
Showing 1–18 of 18 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4887935 | Method of controlling the movement of a longwall excavation front, especially the face or breast of a coal seam | Lotar Sebastian, Kuno Guse | 1989-12-19 |
| 4843886 | Pressure measuring device | Lothar Sebastian, Kuno Guse | 1989-07-04 |
| 4640650 | Hydraulically operated unit for roof support | Karlheinz Bohnes, Friedel Amling | 1987-02-03 |
| 4630973 | Peripherally flexible prop arch for mining tracks, tunnels or the like | Peter Heintzmann, Karlheinz Bohnes, Lothar Domanski | 1986-12-23 |
| 4620748 | Method of and arrangement for loosening, loading and transporting of stratified minerals in underground elongated front longwalls | Peter Heintzmann, Karlheinz Bohnes, Heinz Kunzer | 1986-11-04 |
| 4610424 | Shut-off valve | Karlheinz Bohnes, Kuno Guse, Friedel Amling | 1986-09-09 |
| 4602896 | Clamping connection device for flanged through sections of support structures | Karlheinz Bohnes, Lothar Domanski, Werner Mennekes, Dieter Moebus, Rudolf Turowski | 1986-07-29 |
| 4586530 | Arrangement for supplying of consumers with pressure fluids | Peter Heintzmann, Karlheinz Bohnes, Rolf-Peter Smektala | 1986-05-06 |
| 4576524 | Rock anchor arrangement | Peter Heintzmann, Karlheinz Bohnes, Gerhard Hecken | 1986-03-18 |
| 4572480 | Hydraulic prop | Peter Heintzmann, Friedel Amling, Karlheinz Bohnes | 1986-02-25 |
| 4465404 | Wall element for an underground gallery | Peter Heintzmann, Karlheinz Bohnes, Lothar Domanski | 1984-08-14 |
| 4440526 | Rock anchoring arrangement | Karlheinz Bohnes, Bernhard Stephan | 1984-04-03 |
| 4437562 | Chain bucket conveyor | Karlheinz Bohnes, Heinz Kunzer | 1984-03-20 |
| 4332512 | Arrangement for erecting columnar supporting elements for underground excavations | Peter Heintzmann, Karlheinz Bohnes | 1982-06-01 |
| 4277204 | Excavation roof support and method of installing the same | Karlheinz Bohnes, Harry J. Fitzgerald | 1981-07-07 |
| 4255071 | Supporting of excavation roofs | Klaus Spies, Karlheinz Bohnes | 1981-03-10 |
| 4252476 | Hydraulically operated mine prop with safety valve | Peter Marr | 1981-02-24 |
| 4236850 | Shield timbering frame for timbering mines | Ludwig Pawelski | 1980-12-02 |