US2668253A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Getter for electron discharge devices
Assignee: American Television Inc
•
Filing: 1950-07-06
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Granted: 1954-02-02
•
Expires: 1970-07-06
Abstract
No abstract record available.
Inventors
- 👤 Warren G Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:59
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/94; H01J7/00; H01J7/14; H01J7/18; H01J7/186
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1859029A
Cited
US2130190A
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US2394396A
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US2412302A
Cited
US2449786A
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US2445993A
Cited
US2445257A
Cited
US2444423A
Cited
US2469626A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-02-01 | 1957-08-03 | 1958-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-01 | 1961-08-03 | 1962-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-01 | 1965-08-03 | 1966-02-02 | $7700.00 | Window Closed / Lapsed |