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US2467224A
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Neutralization of electrostatic charges in electron-optical instruments
Assignee: RCA Corp
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Filing: 1948-02-21
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Granted: 1949-04-12
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Expires: 1968-02-21
Abstract
No abstract record available.
Inventors
- 👤 Robert G Picard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:48
CPC Classifications
H; H01; H01J; H01J37/00; H01J37/02; H01J37/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2003301A
Cited
US2129005A
Cited
US2088419A
Cited
US2233876A
Cited
US2271990A
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US2289071A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-04-11 | 1952-10-11 | 1953-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-04-11 | 1956-10-11 | 1957-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-04-11 | 1960-10-11 | 1961-04-12 | $7700.00 | Window Closed / Lapsed |