US3305866A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radio course line beacon radiating a clearance signal
Assignee: International Standard Electric Corp
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Filing: 1964-03-24
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Granted: 1967-02-21
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Expires: 1984-03-24
Abstract
No abstract record available.
Inventors
- 👤 Earp Charles William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:50
CPC Classifications
G; G01; G01S; G01S1/00; G01S1/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
A COURSE LINE GUIDANCE BEACON INCLUDING MEANS TO DEFINE THE COURSE LINE BY SPATIAL OVERLAP BETWEEN TWO HIGHLY DIRECTIVE RADIATION LOBES HAVING DIFFERENT AMPLITUDE MODULATION ENVELOPES, AND MEANS TO RADIATE AS A CLEARANCE SIGNAL A LESS DIRECTIVE LOBE, WHICH HAS AN AMPLITUDE MODULATION ENVELOPE IN PHASE QUADRATURE WITH THE ENVELOPE OF ONE OF THE HIGHLY DIRECTIVE LOBES AND WHICH IS
Claim 2
Dependent Claim
60 words
A COURSE LINE GUIDANCE BEACON INCLUDING MEANS TO DEFINE THE COURSE LINE BY SPATIAL OVERLAP BETWEEN TWO HIGHLY DIRECTIVE RADIATION LOBES HAVING DIFFERENT AMPLITUDE MODULATION ENVELOPES, AND MEANS TO RADIATE AS A CLEARANCE SIGNAL A LESS DIRECTIVE LOBE, WHICH HAS AN AMPLITUDE MODULATION ENVELOPE IN PHASE QUADRATURE WITH THE ENVELOPE OF ONE OF THE HIGHLY DIRECTIVE LOBES AND WHICH IS
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) | 1970-02-20 | 1970-08-22 | 1971-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-20 | 1974-08-22 | 1975-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-20 | 1978-08-22 | 1979-02-21 | $7700.00 | Window Closed / Lapsed |