Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Use of heating and/or ventilation ductwork to broadcast alarm conditions

Use of heating and/or ventilation ductwork to broadcast alarm conditions

US Patent 7777640 · Granted Aug 17, 2010

Assignee

No assignee recorded.

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Apparatus and methods for use of refractory abhesives in protection of metallic 2012
Oxidation-protected metallic foil and methods2012
Oxidation-protected metallic foil and method2006
Barrier coatings and methods in discharge lamps2006
Lighting system for rotating object2001
Laser height detector mast1998