US2793314A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Long-life gas-filled tubes
Assignee: Individual
•
Filing: 1952-01-30
•
Granted: 1957-05-21
•
Expires: 1972-01-30
Abstract
No abstract record available.
Inventors
- 👤 John E White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:03
CPC Classifications
B; B22; B22D; B22D7/00; H; H01; H01J; H01J17/00; H01J17/02; H01J17/22; H01J17/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1656956A
Cited
US1884464A
Cited
US2423426A
Cited
US2497911A
Cited
US2479529A
Cited
US2572881A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-05-20 | 1960-11-19 | 1961-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-05-20 | 1964-11-19 | 1965-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-05-20 | 1968-11-19 | 1969-05-21 | $7700.00 | Window Closed / Lapsed |