US3078453A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radar system for distinguishing closely spaced targets
Assignee: Individual
•
Filing: 1955-05-13
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Granted: 1963-02-19
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Expires: 1975-05-13
Abstract
No abstract record available.
Inventors
- 👤 Clare D Mcgillem
- 👤 Myrton N Jones
- 👤 Richard G Erwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:42
CPC Classifications
G; G01; G01S; G01S1/00; G01S1/02
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
146 words
A RADAR SYSTEM FOR RESOLVING THE ECHO SIGNALS FROM A PLURALITY OF CLOSELY SPACED TARGETS COMPRISING A REFLECTOR, TWO RADIATORS SYMMETRICALLY DISPLACED ON EITHER SIDE OF A MEDIAN CENTERLINE OF THE REFLECTOR TO PRODUCE TWO SLIGHTLY ANGULARLY DISPLACED BEAMS, TRANSMITTER MEANS FOR FEEDING BOTH IN-PHASE AND OUT-OF-PHASE RADIANT ENERGY PULSES TO THE TWO RADIATORS, AND RECEIVER MEANS FOR DETECTING ALL ECHO SIGNALS REFLECTED TO THE TWO RADIATORS FROM A PLURALITY OF CLOSELY SPACED TARGETS IN SAID BEAMS, A HYBRID JUNCTION COUPLING THE TRANSMITTER MEANS AND THE RECEIVERS TO THE TWO RADIATORS SO THAT ONE RECEIVER IS SELECTIVELY RESPONSIVE ONLY TO THE IN-PHASE SIGNALS FROM THE TARGETS AND THE OTHER RECEIVER IS SELECTIVELY RESPONSIVE ONLY TO THE OUT-OF-PHASE SIGNALS RECEIVED FROM SAID TARGETS, AND MEANS FOR SUBTRACTING THE OUTPUT OF ONE RECEIVER FROM THE OUTPUT OF THE OTHER RECEIVER, AND AN INDICATOR COUPLED TO THE SUBTRACTING MEANS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-02-18 | 1966-08-20 | 1967-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-18 | 1970-08-20 | 1971-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-18 | 1974-08-20 | 1975-02-19 | $7700.00 | Window Closed / Lapsed |