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:
Jan. 31, 1984
Filed:
Jun. 03, 1981
Applicant:
Inventors:
Yoshoyuki Kamon, Yokohama, JP;
Yoshihiro Yokoyama, Yokohama, JP;
Assignee:
Sony Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04R / ;
U.S. Cl.
CPC ...
1791 / ; 1791 / ; 179186 ;
Abstract
An earphone comprising a housing formed on the outer periphery of the front face with a flange for preventing the housing from disengagement from the concha when the housing is received in a recess of the concha, said housing being sized to be received in the recess of the concha and having an electroacaustic transducer built in.