Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Filter to be attached around user's waist for purifying air in a supplied air breathing system for use in otherwise hazardous environments

Filter to be attached around user's waist for purifying air in a supplied air breathing system for use in otherwise hazardous environments

US Patent D330587 · Granted Oct 27, 1992

Assignee

No assignee recorded.

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Rhenium recovery2015
Portable air respirator1998
Portable air filter1997