US2606301A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic focusing device for cathode-ray tubes
Assignee: Pye Electronic Products Ltd
•
Filing: 1950-02-23
•
Granted: 1952-08-05
•
Expires: 1970-02-23
Abstract
No abstract record available.
Inventors
- 👤 Court Ratrick Richard James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:41
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/46; H01J29/58; H01J29/64
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2219193A
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US2200039A
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US2336837A
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FR848180A
Cited
US2234720A
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US2442975A
Cited
US2416687A
Cited
US2418487A
Cited
GB597255A
Cited
GB615553A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-08-05 | 1956-02-04 | 1956-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-05 | 1960-02-04 | 1960-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-05 | 1964-02-04 | 1964-08-05 | $7700.00 | Window Closed / Lapsed |