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:
Nov. 02, 2004
Filed:
Oct. 15, 2002
Applicant:
Inventors:
Urban Emborg, Ljungsbro, SE;
Sohan Sarin, Linkoping, SE;
Assignee:
A2 Acoustics AB, Linkoping, SE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F03B 1/104 ;
U.S. Cl.
CPC ...
F03B 1/104 ;
Abstract
A device at an acoustic liner for an apparatus generating sound comprises means ( ) adapted to enable changes of the value of the acoustic impedance of the liner.