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:
Sep. 21, 1999
Filed:
Apr. 01, 1996
Applicant:
Inventors:
Yoshihiro Tanigawa, Kawasaki, JP;
Toshihiko Ikeno, Yokohama, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04M / ;
U.S. Cl.
CPC ...
379137 ;
Abstract
A private branch exchange apparatus which encloses a plurality of external lines and a plurality of extensions including a discriminating circuit to discriminate the number of calls which are being executed and a refusing circuit to refuse a reception call when it is discriminated by the discriminating circuit that the number of calls which are being executed is equal to or larger than a predetermined value such as 1.