Method for interrupting a telephone call after receiving a busy signal
Granted 18 May 1999 · no office action yet
Current assignee: AT&T Services · originally AT&T Company
Law firm: Law firm · Log in to unlock
Attorney: Attorney · Log in to unlock
Inventors: Thomas Michael Bauer, Walter C. Taylor, Elroy P. Cartwright · Examiner: Scott Wolinsky
Life of the patent
2 dated eventsAbstract
A telephone subscriber placing a telephone call through a telecommunications network (10) to a telephone line carrying an existing call may interrupt that call by entering an interrupt code to the network. Upon receipt of the code, the network verifies whether the interrupt code is valid by consulting a data base (21) that cross-references interrupt codes to corresponding lines. If the code is valid for the line carrying the existing call, the network then interrupts the existing call.
Claims
16 · 2 independent · depth 4Classifications
5 codesClaim changes
SoonSee which claims were amended, added or cancelled during examination, with every added and removed word marked.
The published claims of this patent are not paired with the granted ones in what we hold.
File wrapper
Term & fees
See the term timeline — pendency span, in-force span, the maintenance fees paid and both computed expiry dates.
Log in to unlockValidity challenges
See the validity challenges on record — reexaminations, IPRs and PGRs, with their institution decisions and outcomes.
Log in to unlockCitations
See every patent this one cites and every patent that cites it back — publication, assignee, and how each one was found.
Log in to unlock