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, 1982
Filed:
Jun. 09, 1980
Masatane Kariya, Toda, JP;
Akimori Tomizawa, Toda, JP;
Clarion Company, Ltd., Tokyo, JP;
Abstract
In a system for communicating data between two stations interconnected by way of a telephone line, a data transmission system wherein at least one of the stations includes a telephone set normally connected to said telephone line, a line changer, a data transmitter and a signal detector. When another station is called through the telephone set and a predetermined signal transmitted from said another station is detected by the signal detector, the line changer switches the telephone line from the telephone set to the data transmitter.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile