US2508479A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-frequency electromagneticwave translating arrangement
Assignee: Hazeltine Research Inc
•
Filing: 1944-11-16
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Granted: 1950-05-23
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Expires: 1964-11-16
Abstract
No abstract record available.
Inventors
- 👤 Harold A Wheeler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:33
CPC Classifications
H; H01; H01P; H01P3/00; H01P3/12; H01P3/122; H01P5/00; H01P5/02; H01Q; H01Q15/00; H01Q15/02; H01Q19/00; H01Q19/06; H01Q19/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2228798A
Cited
US2320313A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-05-22 | 1953-11-21 | 1954-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-05-22 | 1957-11-21 | 1958-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-05-22 | 1961-11-21 | 1962-05-23 | $7700.00 | Window Closed / Lapsed |