Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Gas and liquid backflow-preventing valve device for drains

Gas and liquid backflow-preventing valve device for drains

US Patent 5419359 · Granted May 30, 1995

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Automobile2011
Intrinsic console with positionable programmable multi-function multi-position c2003
Control means for injection systems of agricultural sprayers1991
Knife drive1984