Inventor
WALLACE DOUGLAS M
US12 patents
Patents
12 patentsUS6353942B1Mar 12, 2002
Modular vacuum toilet with line replaceable units
EVAC INT OY75 citations95
US6732386B2May 11, 2004
Rinse fluid valve for a vacuum toilet
EVAC INT OY19 citations92
US6704947B2Mar 16, 2004
Discharge valve for a vacuum toilet
EVAC INT OY23 citations92
US6536054B2Mar 25, 2003
Vacuum toilet bowl assembly having removable bowl
EVAC INT OY19 citations92
US6536055B2Mar 25, 2003
Modular vacuum toilet with line replaceable units
EVAC INT OY23 citations92
US6370709B1Apr 16, 2002
Discharge valve having a disk with a flushing aperture and an air intake aperture for a vacuum toilet
EVAC INT OY31 citations92
US6349424B1Feb 26, 2002
Rinse fluid valve for a vacuum toilet
EVAC INT OY26 citations92
US6349425B1Feb 26, 2002
Valve set for a vacuum toilet
EVAC INT OY21 citations92
US6347416B1Feb 19, 2002
Vacuum toilet bowl assembly having a removable bowl
EVAC INT OY15 citations92
US6467497B1Oct 22, 2002
Buffer box for use in a vacuum drainage system
EVAC INT OY16 citations83
US6305403B1Oct 23, 2001
Aeration apparatus for a vertical riser in a vacuum drainage system
EVAC INT OY11 citations71
US6283140B1Sep 4, 2001
Waste fluid discharge column
EVAC INT OY6 citations59