Inventor
OLDFELT SVEN
SE11 patents
⚠️ This page may combine multiple inventors who share the name “OLDFELT SVEN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
WAERTSILAE OY AB
9 patentsUS5007117AApr 16, 1991
Vacuum toilet system with simultaneous rinse and discharge
WAERTSILAE OY AB62 citations94
US5165457ANov 24, 1992
Vacuum sewer arrangement
WAERTSILAE OY AB43 citations91
US4928326AMay 29, 1990
Vacuum sewer arrangement
WAERTSILAE OY AB40 citations91
US4713847ADec 22, 1987
Vacuum toilet system
WAERTSILAE OY AB119 citations91
US5454936AOct 3, 1995
Vacuum toilet system
WAERTSILAE OY AB41 citations88
US5245711ASep 21, 1993
Vacuum toilet system
WAERTSILAE OY AB43 citations88
US5002592AMar 26, 1991
Waste tank for a vacuum sewage system
WAERTSILAE OY AB30 citations88
US5692250ADec 2, 1997
Vacuum toilet system with treated rinse liquid
WAERTSILAE OY AB33 citations86
US4704047ANov 3, 1987
Land drainage system
WAERTSILAE OY AB21 citations75