US3222602A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for double cancellation utilizing one delay line in a moving target indicating system
Assignee: Individual
•
Filing: 1959-06-12
•
Granted: 1965-12-07
•
Expires: 1979-06-12
Abstract
No abstract record available.
Inventors
- 👤 Charles H Gager
- 👤 Abraham E Ruvin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:04
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/02; G01S13/50; G01S13/52; G01S13/522; G01S13/524; G01S13/526
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
90 words
A DOUBLE CANCELLATION CIRCUIT FOR MOVING-TARGET INDICATING SYSTEMS COMPRISING: A CARRIER OSCILLATOR; MEANS COUPLED TO SAID CARRIER OSCILLATOR FOR AMPLITUDE-MODULATING THE OUTPUT OF SAID CARRIER OSCILLATOR WITH RECURRENT PULSES; MEANS COUPLED TO SAID AMPLITUDE-MODULATING MEANS FOR DETECTING THE AMPLITUDE DIFFERENCE BETWEEN SUCCESSIVE PULSES OF SAID RECURRENT PULSES; MEANS COUPLED TO SAID AMPLITUDE DIFFERENCE DETECTING MEANS FOR PHASE MODULATING THE OUTPUT OF SAID CARRIER OSCILLATOR WITH THE OUTPUT OF SAID DIFFERENCE DETECTOR; AND MEANS COUPLED TO SAID PHASEMODULATING MEANS FOR DETECTING THE PHASE DIFFERENCE OF SUCCESSIVE PULSES OF SAID RECURRENT PULSES.
References Cited (Backward Citations)
US2901745A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-06 | 1969-06-07 | 1969-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-06 | 1973-06-07 | 1973-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-06 | 1977-06-07 | 1977-12-07 | $7700.00 | Window Closed / Lapsed |