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. 21, 1995
Filed:
Nov. 15, 1994
Applicant:
Inventor:
Kuniaki Otsuka, Yokohama, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04M / ;
U.S. Cl.
CPC ...
379201 ; 379356 ; 379131 ; 379211 ;
Abstract
A telephone exchange apparatus for plural extension telephone units is capable of interchanging, in response to a predetermined operation from one of the extension telephone units, the extension numbers of two extension telephone units and the associated information stored in advance for these extension telephone units, such as individual one-touch dialling data, abbreviated dialling data and re-dialling data. In response to the predetermined operation, the exchange apparatus interchanges the data areas in a memory respectively corresponding to the physical addresses of the extension telephone units.