US2686884A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Space charge controlled X-ray tube
Assignee: DUNLEC Corp
•
Filing: 1950-05-01
•
Granted: 1954-08-17
•
Expires: 1970-05-01
Abstract
No abstract record available.
Inventors
- 👤 Zed J Atlee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:27
CPC Classifications
H; H01; H01J; H01J35/00; H01J35/02; H01J35/14; H01J35/147
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2036069A
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US2048094A
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US1956396A
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US2091443A
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US2108573A
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US2129646A
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US2348184A
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US2475197A
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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) | 1957-08-16 | 1958-02-15 | 1958-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-16 | 1962-02-15 | 1962-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-16 | 1966-02-15 | 1966-08-17 | $7700.00 | Window Closed / Lapsed |