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:
Mar. 20, 2007
Filed:
Nov. 27, 2001
Norimasa Niiya, Hino, JP;
Norimasa Niiya, Hino, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
A new key telephone system including a new key telephone and new telephone interface which use a new data transmission scheme has been developed, unlike an old key telephone system including an old telephone and old telephone interface unit which use an old data transmission scheme. The new telephone interface unit and new key telephone are compatible with both the new and old data transmission schemes. Even if, therefore, the new telephone interface unit is connected to the old key telephone, or the old telephone interface unit is connected to the new key telephone, data transmission can be performed by using the old data transmission scheme, thus maintaining compatibility.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile