Patent US1132324A successfully refreshed from Google Patents.
Patent US3105194A successfully refreshed from Google Patents.
US3105194A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Timing recovery circuit
Assignee: AT&T Inc
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Filing: 1960-12-02
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Granted: 1963-09-24
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Expires: 1980-12-02
Abstract
No abstract record available.
Inventors
- 👤 Michael A Rappeport
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:51
CPC Classifications
H; H04; H04L; H04L7/00; H04L7/02; H04L7/027
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
APPARATUS FOR GENERATING A SINE WAVE SIGNAL WHOSE FREQUENCY IS THAT OF THE BASIC PULSE REPETITION FREQUENCY OF A PULSE INPUT SIGNAL COMPRISING PULSES AND SPACES IN A SUCCESSION OF TIME SLOTS COMPRISING, IN COMBINATION, A TUNED CIRCUIT WHICH RESONATES AT SAID BASIC PULSE REPETITION FREQUENCY IN RESPONSE TO THE APPLICATION OF AN EXCITATION PULSE, AND MEANS CONNECTED TO SAID TUNED CIRCUIT WHICH GENERATES AN EXCITATION PULSE ONLY IN RESPONSE TO A PARTICULAR THREE OR MORE DIGIT PULSE PATTERN COMPRISING AT LEAST ONE PULSE AND AT LEAST ONE SPACE OF SAID PULSE INPUT SIGNAL.
Claim 2
Dependent Claim
94 words
APPARATUS FOR GENERATING A SINE WAVE SIGNAL WHOSE FREQUENCY IS THAT OF THE BASIC PULSE REPETITION FREQUENCY OF A PULSE INPUT SIGNAL COMPRISING PULSES AND SPACES IN A SUCCESSION OF TIME SLOTS COMPRISING, IN COMBINATION, A TUNED CIRCUIT WHICH RESONATES AT SAID BASIC PULSE REPETITION FREQUENCY IN RESPONSE TO THE APPLICATION OF AN EXCITATION PULSE, AND MEANS CONNECTED TO SAID TUNED CIRCUIT WHICH GENERATES AN EXCITATION PULSE ONLY IN RESPONSE TO A PARTICULAR THREE OR MORE DIGIT PULSE PATTERN COMPRISING AT LEAST ONE PULSE AND AT LEAST ONE SPACE OF SAID PULSE INPUT SIGNAL.
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) | 1966-09-23 | 1967-03-25 | 1967-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-23 | 1971-03-25 | 1971-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-23 | 1975-03-25 | 1975-09-24 | $7700.00 | Window Closed / Lapsed |