|
| US4343568 | 11 Ago 1980 | 10 Ago 1982 | | Road grading and tamping appliance |
| US4425813 | 4 Jun 1981 | 17 Ene 1984 | | Vibration dampening apparatus for motor actuated eccentric forces |
| US4472980 | 10 Feb 1982 | 25 Sep 1984 | | Motor actuated rotary vibrator with resilient shock mount to provide linear movement |
| US4653957 | 21 Jun 1985 | 31 Mar 1987 | | Air driven vibration cement float |
| US4947940 | 18 Ene 1989 | 14 Ago 1990 | | Apparatus and method for removing oil spots from a surface |
| US5234283 | 23 Ene 1992 | 10 Ago 1993 | | Vibratory concrete float apparatus |
| USRE35073 | 26 Ago 1992 | 31 Oct 1995 | Gary N. Martin
Judy A. Wilkens | Apparatus and method for removing oil spots from a surface |
