"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."
Scientific American ; Jan. 2 edition, 1909
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| 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... | 01/11/2007 |
| 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... | 04/06/2006 |