US2834907A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electron tube
Assignee: Individual
•
Filing: 1953-11-06
•
Granted: 1958-05-13
•
Expires: 1973-11-06
Abstract
No abstract record available.
Inventors
- 👤 Nicholas D Glyptis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:43
CPC Classifications
H; H01; H01J; H01J19/00; H01J19/42; H01J19/44; H01J21/00; H01J21/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2129849A
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US2074864A
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US2118668A
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US2272374A
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US2307027A
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US2334471A
Cited
US2417730A
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US2464270A
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US2462921A
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US2449676A
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US2455381A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-12 | 1961-11-11 | 1962-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-12 | 1965-11-11 | 1966-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-12 | 1969-11-11 | 1970-05-13 | $7700.00 | Window Closed / Lapsed |