Patent US2568631A successfully refreshed from Google Patents.
US2568631A
Expired / Lapsed
US
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Focus coil support and control
Assignee: Admiral Corp
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Filing: 1950-01-27
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Granted: 1951-09-18
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Expires: 1970-01-27
Abstract
No abstract record available.
Inventors
- 👤 John L Hoellerich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:04
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/46; H01J29/82; H01J29/823
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2165779A
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US2479494A
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US2234720A
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US2443973A
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US2428928A
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GB597255A
Cited
US2440403A
Cited
US2521061A
Cited
US2471154A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-09-17 | 1955-03-19 | 1955-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-17 | 1959-03-19 | 1959-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-17 | 1963-03-19 | 1963-09-18 | $7700.00 | Window Closed / Lapsed |