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:
Aug. 14, 2001
Filed:
May. 24, 1999
Applicant:
Inventors:
Nicolaas B. Roozen, Eindhoven, NL;
Abraham Hirschberg, Veldhoven, NL;
Pascas Van Eck, Eindhoven, NL;
Assignee:
U.S. Philips Corporation, New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04R 2/500 ;
U.S. Cl.
CPC ...
H04R 2/500 ;
Abstract
A loudspeaker system comprises an enclosure which accommodates a loudspeaker device and a bass-reflex port (,). The port has two open ends (,) and a central area (c) provided with perforations (,), as well as a foam material (,) provided in and/or on the perforations.
Roozen, Nicolaas. (2001). Loudspeaker system having a bass-reflex port (U.S. Patent No. 6275597). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6275597
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile