Number | Name | Date | Kind |
---|---|---|---|
2767510 | Hopkins | Oct 1956 | |
3446488 | May 1969 | ||
3542675 | Nov 1970 | ||
3651646 | Grunau | Mar 1972 | |
3679056 | Haymore | Jul 1972 | |
4313680 | Honnen | Feb 1982 | |
4382867 | Schrit | May 1983 | |
4534914 | Takahashi | Aug 1985 | |
4585031 | Raftis | Apr 1986 | |
4607663 | Raftis | Aug 1986 | |
4752383 | McKay et al. | Jun 1988 | |
4911826 | Harach et al. | Mar 1990 | |
4940534 | Harrison | Jul 1990 | |
4971731 | Zipperian | Nov 1990 | |
5078921 | Zipperian | Jan 1992 | |
5356533 | Nakagawa | Oct 1994 | |
5378355 | Winkler | Jan 1995 | |
5397001 | Yoon | Mar 1995 | |
5456362 | Laskowski et al. | Oct 1995 |
Entry |
---|
Minnovex Variable Gap Sparger Operation and Maintenance Manual; Jul. 1, 1994; pp. 1-6. |
TIDEFLEX.TM. All-Rubber Check Valve Installation, Operation and Maintenance Manual; pp. 1-8. |