US2938133A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electron gun assembly
Assignee: STEWART ENGINEERING Co
•
Filing: 1958-12-16
•
Granted: 1960-05-24
•
Expires: 1978-12-16
Abstract
No abstract record available.
Inventors
- 👤 Jr Oscar M Hueter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:36
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/46; H01J29/82
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2310811A
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US2376439A
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US2722625A
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US2802133A
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US2844759A
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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) | 1963-05-24 | 1963-11-23 | 1964-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-24 | 1967-11-23 | 1968-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-24 | 1971-11-23 | 1972-05-24 | $7700.00 | Window Closed / Lapsed |