Patent US2589246A successfully refreshed from Google Patents.
US2589246A
Expired / Lapsed
US
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Oscillator
Assignee: United States, WAR, Secretary of
•
Filing: 1944-12-29
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Granted: 1952-03-18
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Expires: 1964-12-29
Abstract
No abstract record available.
Inventors
- 👤 Henry H Grimm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 00:59
CPC Classifications
H; H03; H03F; H03F3/00; H03F3/54; H03B; H03B5/00; H03B5/18; H03B5/1817; H03B5/1835
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2248227A
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US2223835A
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US2328561A
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US2408355A
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US2443907A
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US2438832A
Cited
US2435442A
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US2458650A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-03-18 | 1955-09-17 | 1956-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-18 | 1959-09-17 | 1960-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-18 | 1963-09-17 | 1964-03-18 | $7700.00 | Window Closed / Lapsed |