US3102930A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic telephone switching system
Assignee: AT&T Inc
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Filing: 1959-03-13
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Granted: 1963-09-03
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Expires: 1979-03-13
Abstract
No abstract record available.
Inventors
- 👤 Lynn T Anderson
- 👤 Jr Ernest G Crane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:23
CPC Classifications
H; H04; H04Q; H04Q3/00; H04Q3/58; H04Q3/62; H04Q3/625
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
A TELEPHONE AUTOMATIC SWITCHING SYSTEM INCLUDING FIRST AND SECOND GROUPS OF CALLING SUBSTATIONS, FIRST AND SECOND REGISTER MEANS, MEANS FOR INDIVIDUALLY CONNECTING SAID FIRST AND SECOND REGISTER MEANS TO SAID FIRST AND SECOND GROUPS OF STATIONS RESPECTIVELY, SAID REGISTERS BEING OPERATIVE RESPONSIVE TO DIGITAL SIGNALS FROM SAID SUBSTATIONS TO STORE THE DIGITAL VALUE THEREOF, REGISTRATION INHIBITING MEANS IN SAID SECOND REGISTER MEANS, MEANS RESPONSIVE UPON THE RECEIPT OF A NUMBER OF PULSES IN A PULSE TRAIN CORRESPONDING TO A PREDETERMINED DIGITAL VALUE FOR ENERGIZING SAID INHIBITING MEANS TO PREVENT STORAGE IN SAID SECOND REGISTER OF SAID PREDETERMINED DIGITAL VALUE, AND MEANS RESPONSIVE UPON THE RECEIPT OF AT LEAST ONE SUCCEEDING PULSE IN SAID SAME PULSE TRAIN CORRESPONDING TO A DIGITAL VALUE HIGHER IN NUMERICAL ORDER THAN SAID PREDETERMINED DIGITAL VALUE FOR DISABLING SAID INHIBITING MEANS TO PERMIT STORAGE IN SAID SECOND REGISTER OF SAID HIGHER DIGITAL VALUE.
Claim 2
Dependent Claim
147 words
A TELEPHONE AUTOMATIC SWITCHING SYSTEM INCLUDING FIRST AND SECOND GROUPS OF CALLING SUBSTATIONS, FIRST AND SECOND REGISTER MEANS, MEANS FOR INDIVIDUALLY CONNECTING SAID FIRST AND SECOND REGISTER MEANS TO SAID FIRST AND SECOND GROUPS OF STATIONS RESPECTIVELY, SAID REGISTERS BEING OPERATIVE RESPONSIVE TO DIGITAL SIGNALS FROM SAID SUBSTATIONS TO STORE THE DIGITAL VALUE THEREOF, REGISTRATION INHIBITING MEANS IN SAID SECOND REGISTER MEANS, MEANS RESPONSIVE UPON THE RECEIPT OF A NUMBER OF PULSES IN A PULSE TRAIN CORRESPONDING TO A PREDETERMINED DIGITAL VALUE FOR ENERGIZING SAID INHIBITING MEANS TO PREVENT STORAGE IN SAID SECOND REGISTER OF SAID PREDETERMINED DIGITAL VALUE, AND MEANS RESPONSIVE UPON THE RECEIPT OF AT LEAST ONE SUCCEEDING PULSE IN SAID SAME PULSE TRAIN CORRESPONDING TO A DIGITAL VALUE HIGHER IN NUMERICAL ORDER THAN SAID PREDETERMINED DIGITAL VALUE FOR DISABLING SAID INHIBITING MEANS TO PERMIT STORAGE IN SAID SECOND REGISTER OF SAID HIGHER DIGITAL VALUE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-09-02 | 1967-03-04 | 1967-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-02 | 1971-03-04 | 1971-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-02 | 1975-03-04 | 1975-09-03 | $7700.00 | Window Closed / Lapsed |