|
| US4057917 | 30. März 1976 | 15. Nov. 1977 | | Method of padding pipe |
| US4255067 | 2. Nov. 1978 | 10. März 1981 | John C. Wright | Disposal of liquid waste and recovery of metals therefrom |
| US4269562 | 7. Aug. 1978 | 26. Mai 1981 | | Trench trash compactor |
| US4540327 | 20. Juni 1983 | 10. Sept. 1985 | F. Happel Tief-und Strassenbau GmbH | Apparatus for feeding bulk material, such as sand |
| US4705429 | 10. Apr. 1986 | 10. Nov. 1987 | GPAC, Inc. | Method of disposing of asbestos waste material |
| US5120433 | 10. Juli 1991 | 9. Juni 1992 | Ozzie's Pipeline Padder, Inc. | Pipeline padding apparatus |
| US5195260 | 15. Juni 1990 | 23. März 1993 | | Pipeline padding apparatus |
| US5244311 | 4. Juni 1992 | 14. Sept. 1993 | Waste Management of North America, Inc. | Method for increasing the capacity of an active landfill |
| US5261171 | 23. März 1992 | 16. Nov. 1993 | | Pipeline padding machine attachment for a vehicle |
| US5363574 | 22. März 1993 | 15. Nov. 1994 | | Pipeline padding apparatus |
| US5401119 | 21. Okt. 1993 | 28. März 1995 | The United States of America as represented by the Secretary of Agriculture | Process and apparatus for the disposal of waste materials |
| US5421108 | 18. Febr. 1993 | 6. Juni 1995 | Capitan Trencher Corp. | High volume pipe padding machine |
| US5429454 | 30. März 1994 | 4. Juli 1995 | BioSafe, Inc. | Landfill reclamation |
| US5636941 | 17. Dez. 1993 | 10. Juni 1997 | Biosafe Landfill Technology, Inc. | Landfill reclamation |
| US6125558 | 12. Apr. 1995 | 3. Okt. 2000 | Capitan Trencher Corp. | High volume pipe padding machine |
| US7886463 | 29. Juni 2005 | 15. Febr. 2011 | Worldwide Machinery Pipeline Division | Pipeline padding machine |
| US7927059 | 11. Okt. 2006 | 19. Apr. 2011 | Worldwide Machinery Pipeline Division | Pipeline padding machine with a debris-resistant escalator assembly |
| US8205546 | 8. Aug. 2011 | 26. Juni 2012 | Forest Concepts, LLC | Engineered top infeed hopper system |