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:
Oct. 25, 1977
Filed:
May. 24, 1976
John M Vandling, Pleasantville, NY (US);
Exxon Research & Engineering Co., Linden, NJ (US);
Abstract
Ancillary equipment including a facsimile transceiver is directly connected to a telephone network through a coupling arrangement. The coupling arrangement includes a transfer relay for transferring the primary communication path to the telephone network between a telephone station set and the ancillary equipment. The transfer between the telephone station set and the ancillary equipment is controlled by a sensor which electrically senses a change from the off-hook to the on-hook state of the telephone set. The transfer is also controlled in response to the state of the ancillary equipment. The coupling arrangement also limits the signal power level coupled into the telephone network from the ancillary equipment.