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:
May. 07, 1991
Filed:
Jun. 12, 1990
Markus Kappeler, Solothurn, CH;
Beat Voser, Grenchen, CH;
ETA SA Fabriques d'Ebauches, , CH;
ETA SA Fabriques d'Ebauches, , CH;
Abstract
The invention relates to telephones that have a base and two handsets or one handset and a base acting as a second handset and which are adapted to be connected to two or more telephone lines. Unlike known telephones designed to be connected to a set number of lines and to no other, the telephone according to the invention comprises an adapter that enables it to be connected equally well to a single line as to two lines or more, depending on the maximum number of lines for which it has been designed, and to provide in each case the same scope for communication between parties as a known telephone connected to the same number of lines. The adapter preferably includes change-over switches that can be operated by acting on a control device that is accessible from outside the telephone, but it may also include change-over switches or wire connections located inside the telephone.