US3226644A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tropospheric scatter communication system having high diversity gain
Assignee: Lockheed Martin Corp
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Filing: 1962-04-12
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Granted: 1965-12-28
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Expires: 1982-04-12
Abstract
No abstract record available.
Inventors
- 👤 Goode Mckay
- 👤 Macdonald J Wiggins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:03
CPC Classifications
H; H04; H04B; H04B7/00; H04B7/02; H04B7/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
A DIVERSITY TYPE PULSE COMMUNICTION SYSTEM UTILIZING THE TROPOSPHERIC SCATTER MEDIUM COMPRISING A SINGLE TRANSMITTING DEVICE WHICH PROPOGATES A COMPLEX RADIO FREQUENCY SIGNAL, SUCH COMPLEX RADIO FREQUENCY SIGNAL HAVING INHERENT MULTIPLE FREQUENCY DIVERSITY CAPABILITIES, AND A SINGLE RECEIVING DEVICE FOR RECEIVING SAID COMPLEX RADIO FREQUENCY SIGNAL, SAID TRANSMITTER DEVICE COMPRISING TIME-FREQUENCY MULTIPLEXING MEANS FOR TRANSMITTING A PLURALITYOF INFORMATION-CARRYING SIGNALS, SAID TIME FREQUENCY MULTIPLEXING MEANS SIMULTANEOUSLY PRODUCING SAID COMPLEX RADIO FREQUENCY SIGNAL, SAID RECEIVING DEVICE COMPRISING MEANS FOR ACHIEVING DIVERSITY GAINS FROM SAID COMPLEX RADIO FREQUENCY SIGNAL, SAID RECEIVING DEVICE INCLUDING MEANS FOR SEPARATING SAID TIME-FREQUENCY MULTI-
Claim 2
Dependent Claim
96 words
A DIVERSITY TYPE PULSE COMMUNICTION SYSTEM UTILIZING THE TROPOSPHERIC SCATTER MEDIUM COMPRISING A SINGLE TRANSMITTING DEVICE WHICH PROPOGATES A COMPLEX RADIO FREQUENCY SIGNAL, SUCH COMPLEX RADIO FREQUENCY SIGNAL HAVING INHERENT MULTIPLE FREQUENCY DIVERSITY CAPABILITIES, AND A SINGLE RECEIVING DEVICE FOR RECEIVING SAID COMPLEX RADIO FREQUENCY SIGNAL, SAID TRANSMITTER DEVICE COMPRISING TIME-FREQUENCY MULTIPLEXING MEANS FOR TRANSMITTING A PLURALITYOF INFORMATION-CARRYING SIGNALS, SAID TIME FREQUENCY MULTIPLEXING MEANS SIMULTANEOUSLY PRODUCING SAID COMPLEX RADIO FREQUENCY SIGNAL, SAID RECEIVING DEVICE COMPRISING MEANS FOR ACHIEVING DIVERSITY GAINS FROM SAID COMPLEX RADIO FREQUENCY SIGNAL, SAID RECEIVING DEVICE INCLUDING MEANS FOR SEPARATING SAID TIME-FREQUENCY MULTI-
References Cited (Backward Citations)
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US2705795A
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US2895128A
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US3020399A
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US3150374A
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US3160711A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-27 | 1969-06-28 | 1969-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-27 | 1973-06-28 | 1973-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-27 | 1977-06-28 | 1977-12-28 | $7700.00 | Window Closed / Lapsed |