Patent US3258694A successfully refreshed from Google Patents.
US3258694A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-channel p.m. transmitter with automatic modulation index control
Assignee: —
•
Filing: —
•
Granted: 1966-06-28
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Expires: 1983-06-28
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:37
CPC Classifications
H; H03; H03C; H03C3/00; H03C3/005; H03C3/02; H03C3/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
IN AN ANGULARLY MODULATED COMMUNICATION SYSTEM WHEREIN OPTIMUM POWER OUTPUT OF THE TRANSMITTED INFORMATION BEARING PORTION OF THE MODULATED WAVE IS ACHIEVED, THE COMBINATION COMPRISING (A) MEANS FOR ANGULARLY MODULATING A CARRIER WAVE WITH INFORMATION BEARING SIGNALS TO PRODUCE AN INFORMATION BEARING MODULATED WAVE HAVING A FREQUENCY SPECTRUM COMPRISING AN UNMODULATED CARRIED COMPONENT AND A PLURALITY OF SIDEBANDS, (B) MEANS FOR TRANSMITTING A SELECTED PORTION OF THE FREQUENCY SPECTRUM OF SAID MODULATED WAVE, SAID SELECTED PORTION INCLUDING AT LEAST OF THE SIDEBANDS BEARING THE DESIRED INFORMATION, (C) MEANS FOR PRODUCING A CONTROL SIGNAL IN RESPONSE TO THE RELATIVE STRENGTH OF A PORTION OF THE FREQUENCY SPECTRUM OF SAID MODULATED WAVE OTHER THAN THE
Claim 2
Dependent Claim
113 words
IN AN ANGULARLY MODULATED COMMUNICATION SYSTEM WHEREIN OPTIMUM POWER OUTPUT OF THE TRANSMITTED INFORMATION BEARING PORTION OF THE MODULATED WAVE IS ACHIEVED, THE COMBINATION COMPRISING (A) MEANS FOR ANGULARLY MODULATING A CARRIER WAVE WITH INFORMATION BEARING SIGNALS TO PRODUCE AN INFORMATION BEARING MODULATED WAVE HAVING A FREQUENCY SPECTRUM COMPRISING AN UNMODULATED CARRIED COMPONENT AND A PLURALITY OF SIDEBANDS, (B) MEANS FOR TRANSMITTING A SELECTED PORTION OF THE FREQUENCY SPECTRUM OF SAID MODULATED WAVE, SAID SELECTED PORTION INCLUDING AT LEAST OF THE SIDEBANDS BEARING THE DESIRED INFORMATION, (C) MEANS FOR PRODUCING A CONTROL SIGNAL IN RESPONSE TO THE RELATIVE STRENGTH OF A PORTION OF THE FREQUENCY SPECTRUM OF SAID MODULATED WAVE OTHER THAN THE
References Cited (Backward Citations)
US2293022A
Cited
US2761105A
Cited
US2877305A
Cited
GB750955A
Cited
US3112481A
Cited
US3020348A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-27 | 1969-12-27 | 1970-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-27 | 1973-12-27 | 1974-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-27 | 1977-12-27 | 1978-06-28 | $7700.00 | Window Closed / Lapsed |