Patent US2816231A successfully refreshed from Google Patents.
US2816231A
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Method and apparatus for imparting a scanning movement to a beam of charged particles
Assignee: High Voltage Engineering Corp
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Filing: 1953-09-29
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Granted: 1957-12-10
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Expires: 1973-09-29
Abstract
No abstract record available.
Inventors
- 👤 John C Nygard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:07
CPC Classifications
H; H01; H01J; H01J33/00; Y; Y10; Y10S; Y10S164/00; Y10S164/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2185135A
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US2429217A
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US2385563A
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US2456909A
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US2561057A
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US2591981A
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US2644909A
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US2602751A
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US2594513A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-12-09 | 1961-06-10 | 1961-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-09 | 1965-06-10 | 1965-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-09 | 1969-06-10 | 1969-12-10 | $7700.00 | Window Closed / Lapsed |