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US2824229A
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Direct current potential generator
Assignee: General Dynamics Corp
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Filing: 1951-05-11
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Granted: 1958-02-18
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Expires: 1971-05-11
Abstract
No abstract record available.
Inventors
- 👤 Joseph W Gratian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:59
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/04; H03K3/05; H03K3/06; H03K3/08; H03K5/00; H03K5/13; H03K5/135
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2392114A
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US2400648A
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US2390608A
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GB582095A
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US2535912A
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US2541259A
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US2643330A
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US2580771A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-02-17 | 1961-08-19 | 1962-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-17 | 1965-08-19 | 1966-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-17 | 1969-08-19 | 1970-02-18 | $7700.00 | Window Closed / Lapsed |