Is a
Patent attributes
Patent Applicant
Patent Jurisdiction
Patent Number
Date of Patent
June 27, 2023
0Patent Application Number
171192610
Date Filed
December 11, 2020
0Patent Citations
Patent Primary Examiner
An improved detector device for locating studs and other objects behind a substrate (such as a wall) uses one or more light emitting diodes (LEDs) in combination with a photochromic compound to mark the locations on the substrate behind which objects are located.
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