|
| US4120484 | 9. Nov. 1977 | 17. Okt. 1978 | | Panel hoisting and positioning device |
| US4508316 | 25. Apr. 1983 | 2. Apr. 1985 | | Cable driven jack |
| US4580377 | 1. Aug. 1984 | 8. Apr. 1986 | | Telescopic mast |
| US4600348 | 9. Juli 1984 | 15. Juli 1986 | | Panel hoist |
| US4667605 | 22. Sept. 1986 | 26. Mai 1987 | Hamilton Industries, Inc. | Adjustable table leg assembly |
| US5078364 | 26. Juli 1990 | 7. Jan. 1992 | Sumner Manufacturing Co., Inc. | Carriage lock mechanism for portable cable hoist |
| US5090667 | 3. Dez. 1990 | 25. Febr. 1992 | Summer Mfg. Co., Inc. | Collapsible mobile base for cable hoists |
| US5112019 | 4. Febr. 1991 | 12. Mai 1992 | Storz Instrument Company | Motorized IV pole assembly |
| US5368429 | 17. Febr. 1993 | 29. Nov. 1994 | | Panel lifting apparatus |
| US6234453 | 12. Aug. 1999 | 22. Mai 2001 | | Rolling door winch apparatus |
| US7195216 | 10. Dez. 2004 | 27. März 2007 | Gemmy Industries Corporation | Adjustable trunk for an artificial Christmas tree |
| US7708250 | 19. Febr. 2008 | 4. Mai 2010 | | Ceiling panel support apparatus |