The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 23, 2014
Filed:
Dec. 07, 2007
Applicant:
Matthias Christner, Ludwigsburg, DE;
Inventor:
Matthias Christner, Ludwigsburg, DE;
Assignee:
D&B Audiotechnik GmbH, Backnang, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04R 1/20 (2006.01); H04R 1/02 (2006.01); H04R 1/32 (2006.01); H04R 1/28 (2006.01); H04R 1/40 (2006.01);
U.S. Cl.
CPC ...
H04R 1/323 (2013.01); H04R 1/2819 (2013.01); H04R 1/2842 (2013.01); H04R 1/403 (2013.01);
Abstract
A loudspeaker system has a front loudspeaker enclosure () having at least one first loudspeaker () and a rear loudspeaker enclosure () having at least one second loudspeaker (). The rear loudspeaker enclosure () is in the form of a bandpass enclosure.
Christner, Matthias. (2014). Loudspeaker system with reduced rear sound radiation (U.S. Patent No. 8842866). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8842866
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile