E - Fixed Constructions – 03 – F
Patent
E - Fixed Constructions
03
F
E03F 7/00 (2006.01) E03C 1/12 (2006.01) E03F 1/00 (2006.01) E03F 5/04 (2006.01) E03F 7/06 (2006.01)
Patent
CA 2428988
The invention relates to a system for the improvement of the internal living environment by installing in a drainage system an Instant Water Seal Trap (IWST) system, comprising an outer coaxial U-shaped bowl, an inner inverted bowl, a one-way suction relief valve and a drainage cover. The invention relates to a method for the improvement of the internal living environment by installing in a drainage system an Instant Water Seal Trap (IWST) system, comprising an outer coaxial U-shaped bowl, an inner inverted bowl, a one-way suction relief valve and a drainage cover.
Chui Sai Peng
Na
LandOfFree
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