|
| US4009774 | 29. Okt. 1974 | 1. März 1977 | | Conveyor |
| US4116619 | 26. Mai 1977 | 26. Sept. 1978 | BTU Engineering Corporation | Multiple beam furnace |
| US4212633 | 16. Nov. 1978 | 15. Juli 1980 | Abar Corporation | Vacuum electric furnace |
| US4236466 | 2. Jan. 1979 | 2. Dez. 1980 | Wheelabrator-Frye Inc. | Mechanical actuation of furnace grate beams |
| US4391587 | 19. Jan. 1982 | 5. Juli 1983 | Nippon Steel Corporation | Slab heating furnace |
| US4585411 | 29. Juni 1984 | 29. Apr. 1986 | ITALIMPIANTI Societa Italiana Impianti p.a. | Method and walking beam furnace for the intermediate heating of pipes in hot rolling mills |
| US4723909 | 20. März 1987 | 9. Febr. 1988 | Stein Heurtey | Walking beam oven for advancing products at different speeds in different sections of the oven |
| US4741695 | 23. Juli 1986 | 3. Mai 1988 | Chugai Ro Co., Ltd. | Walking beam type reheating furnace |
| US4820150 | 25. Aug. 1987 | 11. Apr. 1989 | Chugai Ro Co., Ltd. | Walking beam type reheating furnace |
| US4828489 | 11. Dez. 1987 | 9. Mai 1989 | | High speed firing method and kiln, in particular for ceramic materials such as tiles and the like |
| US4863376 | 24. Febr. 1988 | 5. Sept. 1989 | Italimpianti S.p.A. | Walking beam furnace |
| US5139418 | 7. März 1991 | 18. Aug. 1992 | Stein Heurtey | Device for discharging and transferring steelworks products |
| US5211557 | 25. Febr. 1992 | 18. Mai 1993 | Taikisha Ltd. | Heating furnace |
| US5391034 | 18. Mai 1992 | 21. Febr. 1995 | Danieli & C. Officine Meccaniche SpA | Furnace with refractory longitudianl members and with central charging for heating and storing hot products |
| US6672866 | 1. Okt. 2002 | 6. Jan. 2004 | Riedhammer GmbH | Continuous furnace for tubular firing material |
