"That the automobile has practically reached the limit of its development is suggested by the fact that during the past year no improvements of a radical nature have been introduced."
|Application No.||Application Title||Issue Date|
|20070008106||Polarized telephone system for 3-state and 4-state systems|
A firefighter's telephone communication system is provided that includes a polarized telephone station that may be connected to either 3-state (detection of normal, open, or call-in) or 4-state (detection of normal, open, short, or call-in) telephone control panel, with...
|20060071802||Fire alarm system with method of building occupant evacuation|
A fire alarm system is provided including a controller having a signaling delay, a plurality of smoke and/or heat detectors, a plurality of audible devices which may include sirens, public announcement devices and the like, and a plurality of visible devices which may i...