US2765994A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Unidirectional airport
Assignee: STRATO PORT CORP OF AMERICA
•
Filing: 1953-04-29
•
Granted: 1956-10-09
•
Expires: 1973-04-29
Abstract
No abstract record available.
Inventors
- 👤 Jordanoff Assen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:33
CPC Classifications
E; E01; E01F; E01F7/00; E01F7/02; E01F7/025; B; B64; B64F; B64F1/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2095520A
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US2082406A
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US2329102A
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US2400841A
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US2465587A
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FR924016A
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US2522144A
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US2522667A
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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) | 1959-10-09 | 1960-04-09 | 1960-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-09 | 1964-04-09 | 1964-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-09 | 1968-04-09 | 1968-10-09 | $7700.00 | Window Closed / Lapsed |