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US Patent 9578728 Long life, fail safe traffic light

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Patent Citations Received
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US Patent 12095381 Three phase bidirectional AC-DC converter with bipolar voltage fed resonant stages
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Patent Citations Received
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US Patent 11930568 Controller for controlling a light source module
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Edits on 6 Dec, 2023
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Patent abstract

The present disclosure is directed to a method for detecting a failure in a signal light. In one embodiment, the method includes monitoring operation of one or more light emitting diodes (LEDs) of the signal light coupled to a constant current driver, detecting a short circuit in at least one of the one or more LEDs and signaling a failure in the signal light when the short circuit is detected.

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Patent Inventor Names
Glenn J. Zingler0
Kevin A. Hebborn0
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Official Website
https://pdfpiw.uspto.gov/.piw?Docid=095787280
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US Patent 09578728 Long life, fail safe traffic light US Patent 9578728 Long life, fail safe traffic light

Infobox
Patent Number
095787280
Patent Number
95787280
Edits on 29 Mar, 2023
"Entity importer update"
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edited on 29 Mar, 2023
Infobox
Is a
Patent
Patent
0
Patent Jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
0
Patent Number
095787280
Date of Patent
February 21, 2017
0
Patent Application Number
139208060
Date Filed
June 18, 2013
0
Official Website
https://pdfpiw.uspto.gov/.piw?Docid=095787280
Patent Primary Examiner
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Thai Pham
0
Edits on 15 Jun, 2022
"Entity importer update"
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edited on 15 Jun, 2022
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Website URL
https://pdfpiw.uspto.gov/.piw?Docid=09578728
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 US Patent 09578728 Long life, fail safe traffic light

Infobox
Is a
Patent
Patent
Patent jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
Patent number
09578728
Date of patent
February 21, 2017
Patent application number
13920806
Date Filed
June 18, 2013
Patent primary examiner
‌
Thai Pham

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