US3145341A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Correlation means for a direction finding system
Assignee: AT&T Inc
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Filing: 1961-01-03
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Granted: 1964-08-18
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Expires: 1981-01-03
Abstract
No abstract record available.
Inventors
- 👤 Harold B Andrew
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:36
CPC Classifications
H; H03; H03D; H03D1/00; G; G01; G01S; G01S3/00; G01S3/02; G01S3/14; G01S3/46; G06; G06G; G06G7/00; G06G7/12; G06G7/19; G06G7/1914
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
202 words
IN COMBINATION FIRST AND SECOND SIGNAL SOURCES, MEANS FOR CONTINUOUSLY TIME COMPRESSING SUCCESSIVE PORTIONS OF THE OUTPUT OF SAID FIRST SOURCE TO PRODUCE A FIRST TIME COMPRESSED OUTPUT IN WHICH EACH OF THE TIME-COMPRESSED PORTIONS IS REPEATED AT LEAST ONCE, MEANS FOR CONTINUOUSLY TIME COMPRESSING SUCCESSIVE PORTIONS OF THE OUTPUT OF SAID SECOND SOURCE TO PRODUCE A SECOND TIME-COMPRESSED OUTPUT IN WHICH EACH OF THE TIME COMPRESSED PORTIONS IS REPEATED AT LEAST ONCE, MEANS FOR CORRELATING SUBSTANTIALLY ONLY THOSE COMPONENTS OF ALTERNATE ONES OF SAID TIME-COMPRESSED PORTIONS IN ONE OF SAID TIME-COMPRESSED OUTPUTS THAT ARE WITHIN A FIRST FREQUENCY BAND WITH SUBSTANTIALLY ONLY THOSE COMPONENTS OF THE CORRESPONDING TIME-COMPRESSED PORTIONS IN THE OTHER OF SAID TIME-COMPRESSED OUTPUTS THAT ARE WITHIN SAID FIRST FREQUENCY BAND AND SUBSTANTIALLY ONLY THOSE COMPONENTS OF THE REMAINING ONES OF SAID TIME-COMPRESSIONED PORTIONS IN ONE OF SAID TIME-COMPRESSED OUTPUTS THAT ARE WITHIN A SECOND FREQUENCY BAND LESS THAN SAID FIRST FREQUENCY BAND WITH SUBSTANTIALLY ONLY THOSE COMPONENTS OF THE CORRESPONDING PORTIONS IN THE OTHER OF SAID TIME-COMPRESSED OUTPUTS THAT ARE WITHIN SAID SECOND FREQUENCY BAND, AND MEANS FOR RECORDING EACH OF THE OUTPUTS OF SAID CORRELATING MEANS AS A FUNCTION OF THE DELAY INTRODUCED BY SAID CORRELATING MEANS.
Claim 2
Dependent Claim
202 words
IN COMBINATION FIRST AND SECOND SIGNAL SOURCES, MEANS FOR CONTINUOUSLY TIME COMPRESSING SUCCESSIVE PORTIONS OF THE OUTPUT OF SAID FIRST SOURCE TO PRODUCE A FIRST TIME COMPRESSED OUTPUT IN WHICH EACH OF THE TIME-COMPRESSED PORTIONS IS REPEATED AT LEAST ONCE, MEANS FOR CONTINUOUSLY TIME COMPRESSING SUCCESSIVE PORTIONS OF THE OUTPUT OF SAID SECOND SOURCE TO PRODUCE A SECOND TIME-COMPRESSED OUTPUT IN WHICH EACH OF THE TIME COMPRESSED PORTIONS IS REPEATED AT LEAST ONCE, MEANS FOR CORRELATING SUBSTANTIALLY ONLY THOSE COMPONENTS OF ALTERNATE ONES OF SAID TIME-COMPRESSED PORTIONS IN ONE OF SAID TIME-COMPRESSED OUTPUTS THAT ARE WITHIN A FIRST FREQUENCY BAND WITH SUBSTANTIALLY ONLY THOSE COMPONENTS OF THE CORRESPONDING TIME-COMPRESSED PORTIONS IN THE OTHER OF SAID TIME-COMPRESSED OUTPUTS THAT ARE WITHIN SAID FIRST FREQUENCY BAND AND SUBSTANTIALLY ONLY THOSE COMPONENTS OF THE REMAINING ONES OF SAID TIME-COMPRESSIONED PORTIONS IN ONE OF SAID TIME-COMPRESSED OUTPUTS THAT ARE WITHIN A SECOND FREQUENCY BAND LESS THAN SAID FIRST FREQUENCY BAND WITH SUBSTANTIALLY ONLY THOSE COMPONENTS OF THE CORRESPONDING PORTIONS IN THE OTHER OF SAID TIME-COMPRESSED OUTPUTS THAT ARE WITHIN SAID SECOND FREQUENCY BAND, AND MEANS FOR RECORDING EACH OF THE OUTPUTS OF SAID CORRELATING MEANS AS A FUNCTION OF THE DELAY INTRODUCED BY SAID CORRELATING MEANS.
References Cited (Backward Citations)
US2166991A
Cited
US2958039A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-08-18 | 1968-02-17 | 1968-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-18 | 1972-02-17 | 1972-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-18 | 1976-02-17 | 1976-08-18 | $7700.00 | Window Closed / Lapsed |