US3225349A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Moving target indicating radar system
Assignee: General Electric Co
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Filing: 1962-12-17
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Granted: 1965-12-21
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Expires: 1982-12-17
Abstract
No abstract record available.
Inventors
- 👤 Robert C Thor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 06:36
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/02; G01S13/06; G01S13/08; G01S13/10; G01S13/26; G01S13/28; G01S13/282
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
IN A COMBINATION: (A) FIRST MEANS FOR PERIODICALLY GENERATING A PAIR OF SPACED-PHASE-MODULATED PULSES AT A PREDETERMINED GROUP REPETITION FREQUENCY HAVING A FIRST AND A SECOND SPECTRUM, (B) MEANS FOR TRANSMITTING SAID PULES, (C) MEANS FOR RECEIVING ECHOES THEREOF, (D) A FIRST CHANNEL COUPLED TO SAID RECEIVING MEANS INCLUDING FIRST DISPERSIVE DELAY FILTER MEANS HAVING A THE SPECTRUM EXHIBITED BY THE INITIAL PULSE OF SAID PAIR, (E) A SECOND CHANNEL COUPLED TO SAID RECEIVING MEANS INCLUDING A SECOND DISPERSIVE DELAY FILTER MENAS HAVING A TRANSFER FUNCTION WHICH IS THE COMPLEX CONJUGATE OF THE SPECTRUM EXHIBITED BY THE TRAILING PULSE OF SAID PAIR, (F) A TIME DELAY MEANS IN ONE OF SAID CHANNELS SELECTED TO BRING DESIRED OUTPUT PULSES IN SAID RESPECTIVE CHANNELS INTO TIMED CORRESPNDENCE, (G) MEANS COUPLED TO THE OUTPUTS OF SAID FIRST AND SECOND CHANNELS FOR SUBTRACTIVELY COMBINING THE OUTPUTS THEREOF.
Claim 2
Dependent Claim
143 words
IN A COMBINATION: (A) FIRST MEANS FOR PERIODICALLY GENERATING A PAIR OF SPACED-PHASE-MODULATED PULSES AT A PREDETERMINED GROUP REPETITION FREQUENCY HAVING A FIRST AND A SECOND SPECTRUM, (B) MEANS FOR TRANSMITTING SAID PULES, (C) MEANS FOR RECEIVING ECHOES THEREOF, (D) A FIRST CHANNEL COUPLED TO SAID RECEIVING MEANS INCLUDING FIRST DISPERSIVE DELAY FILTER MEANS HAVING A THE SPECTRUM EXHIBITED BY THE INITIAL PULSE OF SAID PAIR, (E) A SECOND CHANNEL COUPLED TO SAID RECEIVING MEANS INCLUDING A SECOND DISPERSIVE DELAY FILTER MENAS HAVING A TRANSFER FUNCTION WHICH IS THE COMPLEX CONJUGATE OF THE SPECTRUM EXHIBITED BY THE TRAILING PULSE OF SAID PAIR, (F) A TIME DELAY MEANS IN ONE OF SAID CHANNELS SELECTED TO BRING DESIRED OUTPUT PULSES IN SAID RESPECTIVE CHANNELS INTO TIMED CORRESPNDENCE, (G) MEANS COUPLED TO THE OUTPUTS OF SAID FIRST AND SECOND CHANNELS FOR SUBTRACTIVELY COMBINING THE OUTPUTS THEREOF.
References Cited (Backward Citations)
US2522367A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-20 | 1969-06-21 | 1969-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-20 | 1973-06-21 | 1973-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-20 | 1977-06-21 | 1977-12-21 | $7700.00 | Window Closed / Lapsed |