US2887606A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electron tube for decimetre-and centimetre-waves
Assignee: US Philips Corp
•
Filing: 1953-06-12
•
Granted: 1959-05-19
•
Expires: 1973-06-12
Abstract
No abstract record available.
Inventors
- 👤 Diemer Gesinus
- 👤 Lemmens Hendrikus Johannes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:57
CPC Classifications
H; H01; H01J; H01J21/00; H01J21/02; H01J21/06; H01J21/065; H01J21/36
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2175707A
Cited
US2462921A
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US2455381A
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US2699517A
Cited
US2716199A
Cited
US2754349A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-18 | 1962-11-17 | 1963-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-18 | 1966-11-17 | 1967-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-18 | 1970-11-17 | 1971-05-19 | $7700.00 | Window Closed / Lapsed |