US Patent 10491984 Speaker device
Patent 10491984 was granted and assigned to Panasonic on November, 2019 by the United States Patent and Trademark Office.
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Edits on 11 Sep, 2024
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Edits on 9 Dec, 2023
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Patent abstract
Provided is a loudspeaker device that can improve sound quality. The loudspeaker device includes: a loudspeaker housing; a first loudspeaker unit provided in a first wall of the loudspeaker housing; and an acoustic tube communicating an inside and an outside of the loudspeaker housing to each other. The acoustic tube has a predetermined length, and is accommodated in the loudspeaker housing and is helically shaped.
Edits on 28 Apr, 2023
Golden AI
Infobox
Is a
Patent Applicant
Current Assignee
Patent Jurisdiction
Patent Number
104919840
Date of Patent
November 26, 2019
0Patent Application Number
157532580
Date Filed
August 8, 2016
0Patent Primary Examiner
Edits on 26 Sep, 2022
Golden AI
Infobox
Is a
Patent Applicant
Current Assignee
Patent Jurisdiction
Patent Number
104919840
Date of Patent
November 26, 2019
0Patent Application Number
157532580
Date Filed
August 8, 2016
0Patent Primary Examiner
Edits on 30 Jan, 2022
Golden AI
Edits made to:
Infobox (+9 properties)
US Patent 10491984 Speaker device
Infobox
Is a
Patent applicant
Current assignee
Patent jurisdiction
Patent number
10491984
Date of patent
November 26, 2019
Patent application number
15753258
Date Filed
August 8, 2016
Patent primary examiner
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