Patent US2705284A successfully refreshed from Google Patents.
US2526682A
Expired / Lapsed
US
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Flight indicating instrument
Assignee: Individual
•
Filing: 1946-04-10
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Granted: 1950-10-24
•
Expires: 1966-04-10
Abstract
No abstract record available.
Inventors
- 👤 Henry C Mulberger
- 👤 James E Bellitt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:23
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/88; G01S13/89
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1636112A
Cited
US1945926A
Cited
US2209191A
Cited
US2403562A
Cited
US2406751A
Cited
US2428427A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-10-23 | 1954-04-24 | 1954-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-23 | 1958-04-24 | 1958-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-23 | 1962-04-24 | 1962-10-24 | $7700.00 | Window Closed / Lapsed |