US2817044A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Unsymmetrical electrostatic deflection device for electron radiation tubes
Assignee: Siemens and Halske AG
•
Filing: 1955-05-19
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Granted: 1957-12-17
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Expires: 1975-05-19
Abstract
No abstract record available.
Inventors
- 👤 Hinderer Hermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 00:54
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/46; H01J29/70; H01J29/72; H01J29/74
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2185239A
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US2229698A
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US2179097A
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US2436393A
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US2617076A
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FR1026932A
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US2617077A
Cited
US2681426A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-12-16 | 1961-06-17 | 1961-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-16 | 1965-06-17 | 1965-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-16 | 1969-06-17 | 1969-12-17 | $7700.00 | Window Closed / Lapsed |