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:
Jun. 05, 1990
Filed:
Jun. 30, 1989
Applicant:
Inventors:
Wayne A Davidson, Winfield, IL (US);
Daniel H Larson, Downers Grove, IL (US);
Assignee:
AT&T Bell Laboratories, Murray Hill, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04M / ;
U.S. Cl.
CPC ...
379211 ; 379201 ; 379210 ;
Abstract
A switching system in which telecommunications features are improved by the use of the proximity status of a telephone station set user. The status is transmitted to the switching system over the same telephone line used for the station set. The proximity status information simply defines the presence or absence of a person to answer calls to the station set without identifying a particular person.