US3278692A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Busy line call transfer system
Assignee: AT&T Inc
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Filing: 1963-08-06
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Granted: 1966-10-11
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Expires: 1983-08-06
Abstract
No abstract record available.
Inventors
- 👤 Henry S Bean
- 👤 Thomas V Burns
- 👤 Richard L Hayes
- 👤 Klein Milton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:53
CPC Classifications
H; H04; H04Q; H04Q3/00; H04Q3/42; H04Q3/54
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
IN A TELEPHONE SYSTEM, A PLURALITY OF LINES EACH ASSIGNED A DISTINCT NUMERICAL DESIGNATION, A COMMON CONTROL CIRCUIT COMPRISING MEANS FOR ESTABLISHING CONNECTING PATHS BETWEEN SAID LINES AS DETERMINED BY SAID NUMERICAL DESIGNATION, CERTAIN OF SAID LINES ARRANGED IN GROUPS OF TWO WHEREIN THE NUMERICAL DESIGNATION DIFFERS ONLY IN THE ASSIGNED UNITS DIGIT, TRANSLATING MEANS SEIZABLE BY SAID COMMON CONTROL MEANS AND RESPONSIVE TO THE NUMERICAL DESIGNATION OF THE FIRST LINE IN ANY OF SAID GROUPS FOR INFORMATION SAID COMMON CONTROL CIRCUIT OF THE UNITS DIGITS OF THE SECOND LINE IN SAID GROUP, AND SAID COMMON CONTROL MEANS FURTHER COMPRISING MEANS RESPONSIVE TO A BUSY CONDITION OF SAID FIRST LINE FOR COMPLETING A CONNECTION TO SAID SECOND LINE.
Claim 2
Dependent Claim
118 words
IN A TELEPHONE SYSTEM, A PLURALITY OF LINES EACH ASSIGNED A DISTINCT NUMERICAL DESIGNATION, A COMMON CONTROL CIRCUIT COMPRISING MEANS FOR ESTABLISHING CONNECTING PATHS BETWEEN SAID LINES AS DETERMINED BY SAID NUMERICAL DESIGNATION, CERTAIN OF SAID LINES ARRANGED IN GROUPS OF TWO WHEREIN THE NUMERICAL DESIGNATION DIFFERS ONLY IN THE ASSIGNED UNITS DIGIT, TRANSLATING MEANS SEIZABLE BY SAID COMMON CONTROL MEANS AND RESPONSIVE TO THE NUMERICAL DESIGNATION OF THE FIRST LINE IN ANY OF SAID GROUPS FOR INFORMATION SAID COMMON CONTROL CIRCUIT OF THE UNITS DIGITS OF THE SECOND LINE IN SAID GROUP, AND SAID COMMON CONTROL MEANS FURTHER COMPRISING MEANS RESPONSIVE TO A BUSY CONDITION OF SAID FIRST LINE FOR COMPLETING A CONNECTION TO SAID SECOND LINE.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-10 | 1970-04-11 | 1970-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-10 | 1974-04-11 | 1974-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-10 | 1978-04-11 | 1978-10-11 | $7700.00 | Window Closed / Lapsed |