US2487656A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electron discharge device of the beam deflection type
Assignee: RCA Corp
•
Filing: 1943-11-22
•
Granted: 1949-11-08
•
Expires: 1963-11-22
Abstract
No abstract record available.
Inventors
- 👤 Kilgore George Ross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:51
CPC Classifications
H; H01; H01J; H01J25/00; H01J25/78
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2195455A
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US2272165A
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GB541623A
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US2320860A
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US2308391A
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US2289952A
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US2403795A
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US2417789A
Cited
US2407708A
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US2404078A
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US2407163A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-11-07 | 1953-05-09 | 1953-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-11-07 | 1957-05-09 | 1957-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-11-07 | 1961-05-09 | 1961-11-08 | $7700.00 | Window Closed / Lapsed |