U.S. patents available from 1976 to present.
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Patent No. 5979328

Vehicular Impact Signaling Device

An apparatus for the deployment of a visible plume to alert other motorists that a proximate motor vehicle has been involved in a collision.

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Class 246/129 - Short sectional rail closure


Subclass of Class 246 - Railway switches and signals
Definition: Subject matter where an open circuit is closed by the car-wheels
No. of patents: 2
Last issue date: 05/02/2006


NumberTitleIssue Date
7037028Security barrier
A security barrier includes a horizontal composite beam extending across a roadway is mounted between vertical posts at either end of the beam. Hydraulic cylinders fastened at each beam end and to the vertical posts cause the beam to be raised and lowered, as needed...
05/02/2006
4713653High voltage protector
Apparatus for warning workers on electrified railroad tracks that the third rail is live having visual and/or aural alarms, sensing electrodes or contactors for deriving power for activating alarms from the third rail, and circuits for providing visual an...
12/15/1987
 
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