|
| US4149650 | 26 Ago 1977 | 17 Abr 1979 | Roger S. Sanderson | Sterilized storage container |
| US4416591 | 4 Ago 1981 | 22 Nov 1983 | Gulf & Western Manufacturing Company | Reciprocal pump with improved valve |
| US4478558 | 25 Jun 1982 | 23 Oct 1984 | D. W. Zimmerman Mfg., Inc. | Downhole pump with check valve |
| US5609300 | 5 Abr 1995 | 11 Mar 1997 | Campbell Hausfeld/Scott Fetzer Company | Airless paint sprayer outlet check valve |
