US Patent 7952291 Discharge lamp having a visual-change timer
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Edits on 28 Nov, 2023
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Patent abstract
A discharge lamp having a visual-change timer is described. The visual-change timer is comprised of a ceramic material that provides an indication of the cumulative operating time of the lamp. The visual-change timer is expected be a help to consumers in avoiding unnecessary, premature, and costly lamp replacement and a help to lamp manufacturers in verifying the validity of warranty claims for replacement lamps.
Edits on 22 May, 2023
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US Patent 07952291 Discharge lamp having a visual-change timer US Patent 7952291 Discharge lamp having a visual-change timer
Infobox
Patent Number
0795229100
Patent Number
795229100
Edits on 22 Apr, 2023
Golden AI
Infobox
Is a
Patent Jurisdiction
Patent Number
079522910
Date of Patent
May 31, 2011
0Patent Application Number
116867090
Date Filed
March 15, 2007
0Patent Primary Examiner
Edits on 28 Sep, 2022
Golden AI
Infobox
Is a
Patent Jurisdiction
Patent Number
079522910
Date of Patent
May 31, 2011
0Patent Application Number
116867090
Date Filed
March 15, 2007
0Patent Primary Examiner
Edits on 7 Dec, 2021
Golden AI
Edits made to:
Infobox (+7 properties)
US Patent 07952291 Discharge lamp having a visual-change timer
Infobox
Is a
Patent jurisdiction
Patent number
07952291
Date of patent
May 31, 2011
Patent application number
11686709
Date Filed
March 15, 2007
Patent primary examiner
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