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:
Aug. 27, 1996
Filed:
Oct. 23, 1995
Ronan Tallec, Issy les Moulineux, FR;
Abstract
An interface device between a public telephone (9) and an external terminal (14), the public telephone (9) having a control circuit (10) connected to a telephone line (20) and the interface device having a connector (15) accessible to the user. A switching circuit (22) makes it possible to switch the line (20) either to the control circuit of the public telephone (10), or to a connector control circuit. An information circuit of a connection of the external terminal is in the connector, a first electrical insulation module (21) is located between a connector control circuit and the switching circuit (22), a second electrical insulation module (19) is between a connector control circuit and the control circuit of the public telephone (9) and a control circuit of the connector (16).