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US2953714A
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High frequency electric discharge devices
Assignee: Compagnie Francaise Thomson Houston SA
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Filing: 1958-02-05
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Granted: 1960-09-20
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Expires: 1978-02-05
Abstract
No abstract record available.
Inventors
- 👤 Rostas Ernest
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:11
CPC Classifications
H; H01; H01J; H01J23/00; H01J23/02; H01J23/04; H01J23/05; H01J25/00; H01J25/50; H01J25/52
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2585741A
Cited
US2869012A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-09-20 | 1964-03-21 | 1964-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-20 | 1968-03-21 | 1968-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-20 | 1972-03-21 | 1972-09-20 | $7700.00 | Window Closed / Lapsed |