US2586810A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Localizer and glide path system
Assignee: International Standard Electric Corp
•
Filing: 1947-10-21
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Granted: 1952-02-26
•
Expires: 1967-10-21
Abstract
No abstract record available.
Inventors
- 👤 Frum Alexander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:07
CPC Classifications
G; G01; G01S; G01S1/00; G01S1/02; G01S1/08; G01S1/44; G01S1/54
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1135604A
Cited
US1437400A
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US1968085A
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US2112283A
Cited
US2297395A
Cited
US2402410A
Cited
US2404501A
Cited
US2419525A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-02-25 | 1955-08-27 | 1956-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-25 | 1959-08-27 | 1960-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-25 | 1963-08-27 | 1964-02-26 | $7700.00 | Window Closed / Lapsed |