US2807739A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Devices of focusing of electronic beams
Assignee: Thales SA
•
Filing: 1951-07-26
•
Granted: 1957-09-24
•
Expires: 1971-07-26
Abstract
No abstract record available.
Inventors
- 👤 Berterottiere Rene
- 👤 Convert Guy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:24
CPC Classifications
H; H01; H01J; H01J23/00; H01J23/02; H01J23/06; H01J23/075
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2268194A
Cited
US2530373A
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US2511407A
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US2607904A
Cited
US2531972A
Cited
US2694783A
Cited
US2680823A
Cited
US2567674A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-23 | 1961-03-25 | 1961-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-23 | 1965-03-25 | 1965-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-23 | 1969-03-25 | 1969-09-24 | $7700.00 | Window Closed / Lapsed |