Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Semi-pilot operated four-way valve

Semi-pilot operated four-way valve

US Patent 4791960 · Granted Dec 20, 1988

Estimated economic value: $6,880,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Filter for chemical oxygen generators2002
Filter for chemical oxygen generators2001
Filter for chemical oxygen generators2000
Shut off valve1991
Hung diaphragm solenoid valve1989
Hung diaphragm solenoid valve1988
Solenoid valve with contractible assembly ring1987