US3234554A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radio navigation system
Assignee: International Standard Electric Corp
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Filing: 1962-10-30
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Granted: 1966-02-08
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Expires: 1982-10-30
Abstract
No abstract record available.
Inventors
- 👤 Earp Charles William
- 👤 Kramar Ernst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:10
CPC Classifications
G; G01; G01S; G01S1/00; G01S1/02; G01S1/08; G01S1/38; G01S1/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
A RADIO NAVIGATION SYSTEM INCLUDING AT A FIXED STATION AN AERIAL ARRAY HAVING A NUMBER OF STACKED AERIALS EACH ARRANGED AT A DIFFERENT HEIGHT ABOVE GROUND, A COMMON SIGNAL FEED ARRANGEMENT, MEANS FOR CONNECT THE COMMON SIGNAL FEED ARRANGEMENT TO EACH OF THE AERIALS IN A CYCLIC ORDER, MEANS SPACING THE STACKED AERIALS UNIFORMLY AND MEANS CONNECTING THE SIGNAL FEED ARRANGEMENT TO ADJACENT AERIALS SUCCESSIVELY IN BOTH DIRECTIONS.
Claim 2
Dependent Claim
68 words
A RADIO NAVIGATION SYSTEM INCLUDING AT A FIXED STATION AN AERIAL ARRAY HAVING A NUMBER OF STACKED AERIALS EACH ARRANGED AT A DIFFERENT HEIGHT ABOVE GROUND, A COMMON SIGNAL FEED ARRANGEMENT, MEANS FOR CONNECT THE COMMON SIGNAL FEED ARRANGEMENT TO EACH OF THE AERIALS IN A CYCLIC ORDER, MEANS SPACING THE STACKED AERIALS UNIFORMLY AND MEANS CONNECTING THE SIGNAL FEED ARRANGEMENT TO ADJACENT AERIALS SUCCESSIVELY IN BOTH DIRECTIONS.
References Cited (Backward Citations)
US2422333A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-07 | 1969-08-09 | 1970-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-07 | 1973-08-09 | 1974-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-07 | 1977-08-09 | 1978-02-08 | $7700.00 | Window Closed / Lapsed |