Patent US2443973A successfully refreshed from Google Patents.
US2443973A
Expired / Lapsed
US
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Control device for cathode-ray focusing coils
Assignee: Avco Manufacturing Corp
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Filing: 1945-01-05
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Granted: 1948-06-22
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Expires: 1965-01-05
Abstract
No abstract record available.
Inventors
- 👤 Asling Jasper Holland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:25
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/46; H01J29/54
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE13075C
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DE74847C
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US2295198A
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US732258A
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GB437648A
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GB449596A
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US2213832A
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GB519587A
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GB523439A
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US2261309A
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US2389495A
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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) | 1951-06-22 | 1951-12-22 | 1952-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-06-22 | 1955-12-22 | 1956-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-06-22 | 1959-12-22 | 1960-06-22 | $7700.00 | Window Closed / Lapsed |