US2632130A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High current density beam tube
Assignee: Individual
•
Filing: 1947-11-28
•
Granted: 1953-03-17
•
Expires: 1967-11-28
Abstract
No abstract record available.
Inventors
- 👤 Joseph F Hull
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:08
CPC Classifications
H; H01; H01J; H01J3/00; H01J3/02; H01J3/029; H01J23/00; H01J23/02; H01J23/06; H01J23/075
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2038341A
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US2289756A
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US2300052A
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US2278210A
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US2305884A
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US2409224A
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US2355795A
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US2591350A
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US2578434A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-16 | 1956-09-15 | 1957-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-16 | 1960-09-15 | 1961-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-16 | 1964-09-15 | 1965-03-17 | $7700.00 | Window Closed / Lapsed |