Patent US3252139A successfully refreshed from Google Patents.
US2485301A
Expired / Lapsed
US
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Wind drift instrument
Assignee: Link Aviation Inc
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Filing: 1941-08-08
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Granted: 1949-10-18
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Expires: 1961-08-08
Abstract
No abstract record available.
Inventors
- 👤 Lowkrantz Gunne
- 👤 Karl A Kail
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 01:59
CPC Classifications
G; G09; G09B; G09B9/00; G09B9/02; G09B9/08; G09B9/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1910093A
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US1784929A
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US1802963A
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US2116508A
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US2119083A
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US2164412A
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US2099857A
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US2179663A
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US2332475A
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US2386555A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-10-17 | 1953-04-18 | 1953-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-10-17 | 1957-04-18 | 1957-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-10-17 | 1961-04-18 | 1961-10-18 | $7700.00 | Window Closed / Lapsed |