US2680823A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electron optic device for a beam propagating perpendicularly to crossed magnetic and electric fields
Assignee: Thales SA
•
Filing: 1950-07-01
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Granted: 1954-06-08
•
Expires: 1970-07-01
Abstract
No abstract record available.
Inventors
- 👤 Dohler Oscar
- 👤 Lerbs Alfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:53
CPC Classifications
H; H01; H01J; H01J25/00; H01J25/34; H01J25/42; H01J25/44
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2118162A
Cited
US2141322A
Cited
US2232158A
Cited
US2414121A
Cited
US2408216A
Cited
US2536150A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-06-07 | 1957-12-07 | 1958-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-06-07 | 1961-12-07 | 1962-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-06-07 | 1965-12-07 | 1966-06-08 | $7700.00 | Window Closed / Lapsed |