US3206554A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Information verification circuit
Assignee: AT&T Inc
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Filing: 1962-11-26
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Granted: 1965-09-14
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Expires: 1982-11-26
Abstract
No abstract record available.
Inventors
- 👤 Kandel Samuel
- 👤 Myron E Krom
- 👤 Carl C Nielson
- 👤 Zarouni Alfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:58
CPC Classifications
H; H04; H04M; H04M3/00; H04M3/42; H04M3/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
A CENTRAL OFFICE INCLUDING COMMON MEMORY EQUIPMENT, LINE CONNECTED TO SAID CENTROL OFFICE COMPRISING SELECTIVELY OPERABLE SIGNALING MEANS FOR ALTERNATELY CONTROLLING THE WRITING OF INFORMATION IN SAID MEMORY EQUIPMENT AND THE READING OF INFORMATION FROM SAID MEMORY EQUIPMENT, AND SWITCHING MEANS OPERATIVE UPON COMPLETION OF SAID WRITING OF INFORMATION IN SAID MEMORY EQUIPMENT FOR AUTOMATICALLY ENABLING SAID READING OF INFORMATION FROM SAID MEMORY EQUIPMENT.
Claim 2
Dependent Claim
64 words
A CENTRAL OFFICE INCLUDING COMMON MEMORY EQUIPMENT, LINE CONNECTED TO SAID CENTROL OFFICE COMPRISING SELECTIVELY OPERABLE SIGNALING MEANS FOR ALTERNATELY CONTROLLING THE WRITING OF INFORMATION IN SAID MEMORY EQUIPMENT AND THE READING OF INFORMATION FROM SAID MEMORY EQUIPMENT, AND SWITCHING MEANS OPERATIVE UPON COMPLETION OF SAID WRITING OF INFORMATION IN SAID MEMORY EQUIPMENT FOR AUTOMATICALLY ENABLING SAID READING OF INFORMATION FROM SAID MEMORY EQUIPMENT.
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) | 1968-09-13 | 1969-03-15 | 1969-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-13 | 1973-03-15 | 1973-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-13 | 1977-03-15 | 1977-09-14 | $7700.00 | Window Closed / Lapsed |