US3231683A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ferrod gate scanning circuit
Assignee: AT&T Inc
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Filing: 1963-01-11
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Granted: 1966-01-25
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Expires: 1983-01-11
Abstract
No abstract record available.
Inventors
- 👤 Terrell N Lowry
- 👤 John E Mack
- 👤 Harold F May
- 👤 John E Smathers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:34
CPC Classifications
H; H04; H04Q; H04Q3/00; H04Q3/42
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
142 words
A SCANNING CIRCUIT FOR DETECTING CHANGES IN A MONITORED ELEMENT FROM A FIRST TO A SECOND CONDITION AND FROM SAID SECOND TO SAID FIRST CONDITION COMPRISING CIRCUIT MEANS CONNECTED TO SAID MONITORED ELEMENT AND CONTROLLED BY THE CONDITION OF SAID MONITORED ELEMENT; MEMORY MEANS; MEANS CONNECTED TO SAID CIRCUIT MEANS AND SAID MEMORY MEANS FOR INTERROGATING SAID CIRCUIT MEANS AND SAID MEMORY MEANS; MEANS FOR COMPARING CHANGES IN SAID CIRCUIT MEANS AND SAID MEMORY MEANS RESPONSIVE TO SAID INTERROGATING MEANS FOR DETECTING A CHANGE IN SAID MONITORED ELEMENT FROM SAID FIRST CONDITION TO SAID SECOND CONDITION OR FROM SAID SECOND CONDITION TO SAID FIRST CONDITION; AND MEANS RESPONSIVE TO CHANGES IN SAID CIRCUIT MEANS AS A RESULT OF THE OPERATION OF SAID INTERROGATING MEANS, TOGETHER WITH SAID INTERROGATING MEANS, FOR REPRESENTING IN SAID MEMORY MEANS THE PRESENT CONDITION OF SAID MONITORED ELEMENT.
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) | 1969-01-24 | 1969-07-26 | 1970-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-24 | 1973-07-26 | 1974-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-24 | 1977-07-26 | 1978-01-25 | $7700.00 | Window Closed / Lapsed |