Patent US3384840A successfully refreshed from Google Patents.
US3384840A
Expired / Lapsed
US
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Balanced modulator having suppression means
Assignee: TELDATA CORP
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Filing: 1965-07-14
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Granted: 1968-05-21
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Expires: 1985-07-14
Abstract
No abstract record available.
Inventors
- 👤 Jerry L Holsinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:11
CPC Classifications
H; H03; H03C; H03C1/00; H03C1/52; H03C1/54; H03C1/542; H03C1/545
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
A BALANCED MODULATOR COMPRISING MODULATING SIGNAL SOURCE MEANS FOR PROVIDING A MODULATING SIGNAL HAVING A VARYING AMPLITUDE, CARRIER SIGNAL SOURCE MEANS FOR PROVIDING A CARRIER SIGNAL, SWITCHING MEANS CONNECTED TO SAID MODULATING SIGNAL SOURCE MEANS AND SAID CARRIER SIGNAL SOURCE MEANS AND OUTPUT CIRCUIT MEANS CONNECTED TO SAID MODULATING SIGNAL SOURCE MEANS AND SAID SWITCHING MEANS FOR PRODUCING A MODULATED OUTPUT SIGNAL HAVING AN AMPLITUDE THAT VARIES IN RESPONSE TO THE AMPLITUDE OF SAID MODULATING SIGNAL AND BEING PULSED AT THE FREQUENCY OF SAID CARRIER SIGNAL AND WHEREIN SAID OUTPUT CIRCUIT MEANS INCLUDES AN OPERATIONAL AMPLIFIER FOR AMPLIFYING SAID MODULATED OUTPUT SIGNAL.
Claim 2
Dependent Claim
102 words
A BALANCED MODULATOR COMPRISING MODULATING SIGNAL SOURCE MEANS FOR PROVIDING A MODULATING SIGNAL HAVING A VARYING AMPLITUDE, CARRIER SIGNAL SOURCE MEANS FOR PROVIDING A CARRIER SIGNAL, SWITCHING MEANS CONNECTED TO SAID MODULATING SIGNAL SOURCE MEANS AND SAID CARRIER SIGNAL SOURCE MEANS AND OUTPUT CIRCUIT MEANS CONNECTED TO SAID MODULATING SIGNAL SOURCE MEANS AND SAID SWITCHING MEANS FOR PRODUCING A MODULATED OUTPUT SIGNAL HAVING AN AMPLITUDE THAT VARIES IN RESPONSE TO THE AMPLITUDE OF SAID MODULATING SIGNAL AND BEING PULSED AT THE FREQUENCY OF SAID CARRIER SIGNAL AND WHEREIN SAID OUTPUT CIRCUIT MEANS INCLUDES AN OPERATIONAL AMPLIFIER FOR AMPLIFYING SAID MODULATED OUTPUT 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) | 1971-05-21 | 1971-11-20 | 1972-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-21 | 1975-11-20 | 1976-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-21 | 1979-11-20 | 1980-05-21 | $7700.00 | Window Closed / Lapsed |