Patent US2993665A successfully refreshed from Google Patents.
US2993665A
Expired / Lapsed
US
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Automatic instrument landing systems for air-borne craft
Assignee: Honeywell Inc
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Filing: 1954-02-12
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Granted: 1961-07-25
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Expires: 1974-02-12
Abstract
No abstract record available.
Inventors
- 👤 Carpenter Eleanor Bradley
- 👤 Jr Benjamin Carpenter
- 👤 Walter T Fisher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:13
CPC Classifications
G; G05; G05D; G05D1/00; G05D1/04; G05D1/06; G05D1/0607; G05D1/0653; G05D1/0676; G01; G01S; G01S1/00; G01S1/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2423336A
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US2410468A
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US2415429A
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US2415430A
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US2499349A
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US2416097A
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US2472129A
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US2516796A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-24 | 1965-01-23 | 1965-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-24 | 1969-01-23 | 1969-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-24 | 1973-01-23 | 1973-07-25 | $7700.00 | Window Closed / Lapsed |