US2594026A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electron tube with luminescent shield, especially tuning tube
Assignee: Siemens and Halske AG
•
Filing: 1950-10-03
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Granted: 1952-04-22
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Expires: 1970-10-03
Abstract
No abstract record available.
Inventors
- 👤 Jacobi Werner
- 👤 Hinderer Hermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:18
CPC Classifications
H; H01; H01J; H01J31/00; H01J31/08; H01J31/10; H01J31/12; H01J31/14; C; C09; C09J; C09J7/00; C09J7/20; C09J7/21; C09J2400/00; C09J2400/20; C09J2400/28; C09J2400/283
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1994726A
Cited
US2130162A
Cited
US2223285A
Cited
US2243034A
Cited
US2175700A
Cited
US2273800A
Cited
US2394857A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-22 | 1955-10-22 | 1956-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-22 | 1959-10-22 | 1960-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-22 | 1963-10-22 | 1964-04-22 | $7700.00 | Window Closed / Lapsed |