US3299357A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sampled frequency modulation
Assignee: AT&T Inc
•
Filing: 1962-06-04
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Granted: 1967-01-17
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Expires: 1982-06-04
Abstract
No abstract record available.
Inventors
- 👤 Darlington Sidney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 03:00
CPC Classifications
H; H03; H03C; H03C3/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
64 words
A COMMUNICATION SYSTEM COMPRISING A SOURCE OF SIGNALS, MEANS FOR DERIVING SAMPLES FROM THE SIGNALS OF SAID SOURCE, MEANS FOR GENERATING A WAVE WHOSE FREQUENCY IS CONTROLLED BY SAID SAMPLES, MEANS FOR SWEEPING THE FREQUENCY OF SAID WAVE FOR EACH OF SAID SAMPLES, MEANS FOR DISPERSING THE FREQUENCY CONSTITUENTS OF THE FREQUENCY-SWEPT WAVE, AND MEANS FOR DETECTING THE DISPERSED CONSTITUENTS OF SAID FREQUENCY-SWEPT WAVE.
References Cited (Backward Citations)
US3125723A
Cited
US2708268A
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US3110861A
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US2972720A
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US3008087A
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US2957943A
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US2954465A
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US3090922A
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US3154782A
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US3156867A
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US3142022A
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US3216013A
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US3165741A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-16 | 1970-07-18 | 1971-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-16 | 1974-07-18 | 1975-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-16 | 1978-07-18 | 1979-01-17 | $7700.00 | Window Closed / Lapsed |