US2880348A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gettering units for electron tubes
Assignee: Lanteris Space LLC
•
Filing: 1955-01-24
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Granted: 1959-03-31
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Expires: 1975-01-24
Abstract
No abstract record available.
Inventors
- 👤 Charles R Gray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:16
CPC Classifications
H; H01; H01J; H01J7/00; H01J7/14; H01J7/18; H01J7/186; H01J29/00; H01J29/94
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1699112A
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US1689297A
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US1883174A
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US2126686A
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US2263164A
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US2341941A
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US2474335A
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US2638559A
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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) | 1962-03-30 | 1962-09-29 | 1963-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-30 | 1966-09-29 | 1967-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-30 | 1970-09-29 | 1971-03-31 | $7700.00 | Window Closed / Lapsed |