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US3422307A
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US
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Electric arc device with a photoelectric starting electrode
Assignee: Commissariat à l'Énergie Atomique et Aux Énergies Alternatives
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Filing: 1966-09-13
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Granted: 1969-01-14
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Expires: 1986-09-13
Abstract
No abstract record available.
Inventors
- 👤 Philippe Langer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:09
CPC Classifications
H; H01; H01J; H01J17/00; H01J40/00; H03; H03K; H03K3/00; H03K3/02; H03K3/53; H03K3/537; H01J2893/00; H01J2893/0059
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-14 | 1972-07-15 | 1973-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-14 | 1976-07-15 | 1977-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-14 | 1980-07-15 | 1981-01-14 | $7700.00 | Window Closed / Lapsed |