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US2987617A
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US
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Apparatus for converting a vestigialside-band carrier to a double-sideband carrier
Assignee: Hazeltine Research Inc
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Filing: 1956-10-19
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Granted: 1961-06-06
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Expires: 1976-10-19
Abstract
No abstract record available.
Inventors
- 👤 Bernard D Loughlin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:38
CPC Classifications
H; H04; H04N; H04N11/00; H04N11/06; H04N11/12; H04N11/14; H04B; H04B1/00; H04B1/68; H04N5/00; H04N5/44; H04N5/455; Y; Y10; Y10S; Y10S128/00; Y10S128/903
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2108117A
Cited
GB537378A
Cited
US2280187A
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US2394544A
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US2653221A
Cited
US2691988A
Cited
US2784311A
Cited
US2754356A
Cited
US2779818A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-05 | 1964-12-05 | 1965-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-05 | 1968-12-05 | 1969-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-05 | 1972-12-05 | 1973-06-06 | $7700.00 | Window Closed / Lapsed |