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. 17, 1987
Filed:
Oct. 20, 1986
Applicant:
Inventor:
Jan Topholm, Vaerlose, DK;
Assignee:
Topholm & Westermann ApS, Vaerlose, DK;
Primary Examiner:
Int. Cl.
CPC ...
A61B / ;
U.S. Cl.
CPC ...
181135 ; 381 686 ;
Abstract
The invention relates to an in-the-ear hearing aid for people with impaired or defective hearing, with an ear-piece containing a microphone, amplifier, telephone, battery compartment with battery, on/off switch and volume control and closed by a cover plate; a hollow space (6) to the auricular canal is provided for at the inner end of the ear-piece (1) between the sound outlet connector (4) of the telephone (3) and the sound outlet (5) of the hearing air, this hollow space forming a resonator in conjunction with the sound outlet.