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US2533912A
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US
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Resonant electrical arrangement
Assignee: Hazeltine Research Inc
•
Filing: 1946-12-04
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Granted: 1950-12-12
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Expires: 1966-12-04
Abstract
No abstract record available.
Inventors
- 👤 Basil A Bels
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:15
CPC Classifications
G; G01; G01R; G01R23/00; G01R23/02; G01R23/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1617995A
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US2077800A
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US2124029A
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US2103457A
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US2103515A
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US2109880A
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US2086615A
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US2181871A
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US2215582A
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US2251085A
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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) | 1953-12-11 | 1954-06-12 | 1954-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-11 | 1958-06-12 | 1958-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-11 | 1962-06-12 | 1962-12-12 | $7700.00 | Window Closed / Lapsed |