US Patent 11758054 Multiple dwelling house interphone system
Is a
Date Filed
February 28, 2022
Date of Patent
September 12, 2023
Patent Application Number
17652733
Patent Citations
Patent Inventor Names
Kimiaki Fujishima
Masashi Hattori
Ryoji Uno
Yuta Shimomura
Patent Jurisdiction
Patent Number
Patent Primary Examiner
CPC Code
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