US3078344A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phase demodulation of keyed carrier by use of synchronous gating, with phase lock driven step wise in response to forbidden output
Assignee: Robertshaw Controls Co
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Filing: 1960-10-25
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Granted: 1963-02-19
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Expires: 1980-10-25
Abstract
No abstract record available.
Inventors
- 👤 Cecil A Crafts
- 👤 Jr Perry H Goodwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:54
CPC Classifications
H; H04; H04L; H04L27/00; H04L27/18; H04L27/22; H04L27/227; H04L27/2275; H04L27/2276; H04L27/2271; H04L27/2272
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
40 words
A DETECTOR CIRCUIT FOR PHASE SHIFT KEYED SIGNALS OF A TRANSMITTED FREQUENCY WITH PORTIONS OF AT LEAST TWO DIFFERENT PREDETERMINED PHASES AND NOT MORE THAN N-1 DIFFERENT PREDETERMINED PHASES, WHERE N IS AN INTEGER GREATER THAN 2 AND EQUAL TO
Claim 2
Dependent Claim
40 words
A DETECTOR CIRCUIT FOR PHASE SHIFT KEYED SIGNALS OF A TRANSMITTED FREQUENCY WITH PORTIONS OF AT LEAST TWO DIFFERENT PREDETERMINED PHASES AND NOT MORE THAN N-1 DIFFERENT PREDETERMINED PHASES, WHERE N IS AN INTEGER GREATER THAN 2 AND EQUAL TO
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) | 1966-02-18 | 1966-08-20 | 1967-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-18 | 1970-08-20 | 1971-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-18 | 1974-08-20 | 1975-02-19 | $7700.00 | Window Closed / Lapsed |