Patent US3387908A successfully refreshed from Google Patents.
US3387908A
Expired / Lapsed
US
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Electron vacuum tube getter and method of using the same
Assignee: National Video Corp
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Filing: 1966-08-17
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Granted: 1968-06-11
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Expires: 1986-08-17
Abstract
No abstract record available.
Inventors
- 👤 Fogelson Mark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:17
CPC Classifications
H; H01; H01J; H01J7/00; H01J7/14; H01J7/18; H01J29/00; H01J29/94
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1967575A
Cited
US1861643A
Cited
US1952717A
Cited
US2107352A
Cited
US2880348A
Cited
US3131983A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-06-11 | 1971-12-11 | 1972-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-11 | 1975-12-11 | 1976-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-11 | 1979-12-11 | 1980-06-11 | $7700.00 | Window Closed / Lapsed |