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US2989727A
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Illumination landing method and system
Assignee: Edgerton Germeschausen & Grier
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Filing: 1955-11-10
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Granted: 1961-06-20
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Expires: 1975-11-10
Abstract
No abstract record available.
Inventors
- 👤 Kenneth J Germeshausen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:25
CPC Classifications
B; B64; B64F; B64F1/00; B64F1/18; B64F1/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1384659A
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US1413379A
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US1871505A
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US2339243A
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US2498294A
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US2478908A
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US2817069A
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US2597321A
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US2722631A
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US2669703A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-19 | 1964-12-19 | 1965-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-19 | 1968-12-19 | 1969-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-19 | 1972-12-19 | 1973-06-20 | $7700.00 | Window Closed / Lapsed |