Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Mask assembly

Mask assembly

US Patent 4494538 · Granted Jan 22, 1985

Estimated economic value: $702,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Valve flapper with bands of different deflectibility1997
Valve for a pressure breathing system which accomplishes the Valsalva maneuver1995
Gas filter canister housing assembly1988
Oxygen supply system and device therefor1987
Self-contained portable single patient ventilator/resuscitator1987
Self-contained portable single patient ventilator/resuscitator1986
Combined pressure compensating exhalation and anti-suffocation valve1986
Ballistic resistant armor panel and method of constructing the same1985
Unified filter and connector housing assembly incorporating a diversion valve1985
Self-contained ventilator/resuscitator1985
Gas filter container1983