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:
Dec. 11, 1984
Filed:
Dec. 31, 1981
Applicant:
Inventors:
Makoto Katsuma, Kanagawa, JP;
Kiyoshi Alyfuku, Kanagawa, JP;
Masaharu Kawamura, Kanagawa, JP;
Masayoshi Kiuchi, Kanagawa, JP;
Hiroyasu Murakami, Tokyo, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G08B / ;
U.S. Cl.
CPC ...
3403 / ; 310317 ; 340679 ;
Abstract
The present invention produces at least two sound signals such as warning signals or actuating signals by one sounder having a resonant frequency, wherein one of the sound signals is indicated by the resonant frequency of the sounder to enable a higher intensity sound to be produced.