Patent US4798594A successfully refreshed from Google Patents.
US3411092A
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Automatic phase control system for establishing a reference carrier
Assignee: AT&T Inc
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Filing: 1965-12-16
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Granted: 1968-11-12
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Expires: 1985-12-16
Abstract
No abstract record available.
Inventors
- 👤 James S Ronne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 02:04
CPC Classifications
H; H04; H04L; H04L27/00; H04L27/02; H04L27/06; H04L27/066; H03; H03L; H03L7/00; H03L7/06; H03L7/08; H03L7/081; H03L7/0812
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
45 words
IN A RECEIVER FOR MODULATED SIGNALS INCLUDING A CARRIER, A NARROW BANDPASS FILTER FOR SELECTING THE CARRIER, A VOLTAGE CONTROLLED PHASE SHIFTER CONNECTED TO THE OUTPUT OF SAID FILTER, A PHASE DETECTOR SUPPLIED WITH THE INCOMING CARRIER AND THE OUTPUT OF SAID VOLTAGE CONTROLLED PHASE
Claim 2
Dependent Claim
45 words
IN A RECEIVER FOR MODULATED SIGNALS INCLUDING A CARRIER, A NARROW BANDPASS FILTER FOR SELECTING THE CARRIER, A VOLTAGE CONTROLLED PHASE SHIFTER CONNECTED TO THE OUTPUT OF SAID FILTER, A PHASE DETECTOR SUPPLIED WITH THE INCOMING CARRIER AND THE OUTPUT OF SAID VOLTAGE CONTROLLED PHASE
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) | 1971-11-12 | 1972-05-13 | 1972-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-12 | 1976-05-13 | 1976-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-12 | 1980-05-13 | 1980-11-12 | $7700.00 | Window Closed / Lapsed |