Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Switched alert circuit for fireman's breathing system

Switched alert circuit for fireman's breathing system

US Patent 5492110 · Granted Feb 20, 1996

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Electromechanical oxygen valve and regulator2010
Riser line shutoff valve2006
Releaseable hardhat mount for speaker/mike2005
Series/parallel relief valve for use with aircraft gaseous oxygen system2003
Gas shutoff valve having a positive open indicator2003
Winged hardhat speaker or mike mount2002
Hardhat cushion attached speaker or mike mount2002
Hardhat lip speaker or mike mount2002
Weather resistant sound attenuating modular communications headset2002
PTT radio system2001
Emergency service rescue marker1998
Helmet with an alarm1997