Patent US2763447A successfully refreshed from Google Patents.
US2763447A
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High altitude observation means
Assignee: Individual
•
Filing: 1954-08-10
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Granted: 1956-09-18
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Expires: 1974-08-10
Abstract
No abstract record available.
Inventors
- 👤 Mario J Carrau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:14
CPC Classifications
F; F42; F42B; F42B15/00; F42B15/08; B; B64; B64U; B64U10/00; B64U10/20; B64U2101/00; B64U2101/15; B64U2201/00; B64U2201/20; B64U30/00; B64U30/10; B64U30/12; B64U30/20; B64U30/26; B64U50/00; B64U50/10; B64U50/12; B64U50/15
Claims Analysis
Total Claims: 0
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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) | 1959-09-18 | 1960-03-19 | 1960-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-18 | 1964-03-19 | 1964-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-18 | 1968-03-19 | 1968-09-18 | $7700.00 | Window Closed / Lapsed |