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:
Mar. 30, 1999
Filed:
Jul. 01, 1994
Applicant:
Inventors:
Gerald F Caron, Andover, MA (US);
Finn A Arnold, Sutton, MA (US);
Donald F Hamilton, Sterling, MA (US);
Assignee:
Bose Corporation, Framingham, MA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04R / ;
U.S. Cl.
CPC ...
381338 ; 381300 ; 381335 ; 381345 ;
Abstract
Electroacoustical apparatus includes according to one aspect structure for providing a sound field concentrated at a restricted listening region corresponding substantially to a human head while being spaced from the restricted listening region. According to another aspect an electroacoustical transducer is located at the interface of an acoustic waveguide and a ported enclosure.