US5267304A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Directory assistance system
Assignee: Nokia Bell Labs
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Filing: 1991-04-05
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Granted: 1993-11-30
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Expires: 2011-04-05
Abstract
Abstract In an automated directory assistance system, the telephone number of the calling party is used to determine whether or not the outgoing "spoken" message will include the area code of the sought-after number.
Inventors
- 👤 Ronald D. Slusky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:50
CPC Classifications
H; H04; H04M; H04M3/00; H04M3/42; H04M3/487; H04M3/493; H04M3/4931; H04M1/00; H04M1/26; H04M1/27; H04M1/274; H04M1/2745; H04M1/27485; H04M2242/00; H04M2242/22; H04M3/42025; H04M3/42034; H04M3/42059; H04Q; H04Q3/00; H04Q3/72
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
111 words
A method for use in an automated directory assistance system of the type in which calls are routed to the directory assistance system, via a telephone system, from a calling party desiring to learn a sought-after telephone number, said method comprising the steps of receiving in the directory assistance system the telephone number of the calling party from the telephone system, and delivering to the calling party a computer-generated audio message which gives said sought-after telephone number, said delivering step including the step of selectively including the area code of the sought-after number in said message in response to information derived from said received telephone number and said sought-after telephone number.
Claim 2
Independent Claim
111 words
A method for use in an automated directory assistance system of the type in which calls are routed to the directory assistance system, via a telephone system, from a calling party desiring to learn a sought-after telephone number, said method comprising the steps of receiving in the directory assistance system the telephone number of the calling party from the telephone system, and delivering to the calling party a computer-generated audio message which gives said sought-after telephone number, said delivering step including the step of selectively including the area code of the sought-after number in said message in response to information derived from said received telephone number and said sought-after telephone number.
Claim 3
Dependent Claim
29 words
The invention of claim 1 wherein said area code is included in said message only if the area codes of said received number and said sought-after number are different.
References Cited (Backward Citations)
US4817129A
Cited
US4979206A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-11-29 | 1997-05-31 | 1997-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-11-29 | 2001-05-31 | 2001-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-11-29 | 2005-05-31 | 2005-11-30 | $7700.00 | Window Closed / Lapsed |