Patent US3555549A successfully refreshed from Google Patents.
US3555549A
Expired / Lapsed
US
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Radar range indicating system
Assignee: United States Department of the Navy
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Filing: 1968-07-17
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Granted: 1971-01-12
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Expires: 1988-07-17
Abstract
Abstract A RADAR RANGE MEASURING SYSTEM OBTAINS TARGET RANGE BY UTILIZING A DIGITAL COUNTER WITH COUNTS THE CYCLES OF A HIGH FREQUENCY STABLE OSCILLATOR. THE COUNTER COMPRISES A SERIES OF COUNTING STAGES INTERCONNECTED TO A SERIES OF STORAGE STAGES BY A PLURALITY OF AND GATES. THE COUNTER OUTPUT INDICATES RANGE IN EITHER A BINARY CODE OR BINARY CODED DECIMALS IN ACCORDANCE WITH THE POSITION OF A MODE CONTROL SWITCH WHICH IS CONNECTED TO THE AND GATES.
Inventors
- 👤 Phillip L Warkins
- 👤 Frank D Clarke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:14
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/02; G01S13/06; G01S13/08; G01S13/10; G01S13/14; G01S13/16; G01S13/103; G04; G04F; G04F10/00; G04F10/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-11 | 1974-07-13 | 1975-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-11 | 1978-07-13 | 1979-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-11 | 1982-07-13 | 1983-01-12 | $7700.00 | Window Closed / Lapsed |