LandOfFree - US Patents - Listing for Railway switches and signals,Vehicle-energy actuation,Signals and gates, automatic

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Apparatus and methods for providing relatively constant...

Railway switches and signals – Vehicle-energy actuation – Signals and gates – automatic

Reexamination Certificate

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Automated rail way crossing

Railway switches and signals – Vehicle-energy actuation – Signals and gates – automatic

Reexamination Certificate

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Automated railroad crossing warning system

Railway switches and signals – Vehicle-energy actuation – Signals and gates – automatic

Reexamination Certificate

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Cantilever gate arm

Railway switches and signals – Vehicle-energy actuation – Signals and gates – automatic

Reexamination Certificate

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Highway grade crossing vehicle violation detector

Railway switches and signals – Vehicle-energy actuation – Signals and gates – automatic

Reexamination Certificate

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Intelligent rail crossing control system and train tracking...

Railway switches and signals – Vehicle-energy actuation – Signals and gates – automatic

Reexamination Certificate

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Locomotive whistle controlled railroad grade crossing...

Railway switches and signals – Vehicle-energy actuation – Signals and gates – automatic

Reexamination Certificate

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Method and apparatus for indicating the presence of a train...

Railway switches and signals – Vehicle-energy actuation – Signals and gates – automatic

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Method and system for automatically activating a warning...

Railway switches and signals – Vehicle-energy actuation – Signals and gates – automatic

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Motion barrier

Railway switches and signals – Vehicle-energy actuation – Signals and gates – automatic

Patent

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Railroad crossing traffic warning system apparatus and method th

Railway switches and signals – Vehicle-energy actuation – Signals and gates – automatic

Patent

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Railroad maintenance-of-way personnel warning system...

Railway switches and signals – Vehicle-energy actuation – Signals and gates – automatic

Reexamination Certificate

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Railroad safety system

Railway switches and signals – Vehicle-energy actuation – Signals and gates – automatic

Reexamination Certificate

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