Patent US2938134A successfully refreshed from Google Patents.
US2938134A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electron gun
Assignee: TDK Micronas GmbH
•
Filing: 1958-01-13
•
Granted: 1960-05-24
•
Expires: 1978-01-13
Abstract
No abstract record available.
Inventors
- 👤 Herbert L Levin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 04:27
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/46; H01J29/82
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2227051A
Cited
US2425593A
Cited
US2623192A
Cited
US2740913A
Cited
US2737593A
Cited
US2808528A
Cited
US2845571A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-24 | 1963-11-23 | 1964-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-24 | 1967-11-23 | 1968-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-24 | 1971-11-23 | 1972-05-24 | $7700.00 | Window Closed / Lapsed |