Patent US3531675A successfully refreshed from Google Patents.
US3531675A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cathode ray storage tube having a target dielectric with collector electrodes extending therethrough
Assignee: Tektronix Inc
•
Filing: 1967-02-28
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Granted: 1970-09-29
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Expires: 1987-02-28
Abstract
No abstract record available.
Inventors
- 👤 Roger A Frankland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:22
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/02; H01J29/10; H01J29/36; H01J29/39; H01J29/41
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2015570A
Cited
US2289205A
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US2392161A
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US3157811A
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US3321657A
Cited
US3293474A
Cited
US3366817A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-28 | 1974-03-30 | 1974-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-28 | 1978-03-30 | 1978-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-28 | 1982-03-30 | 1982-09-29 | $7700.00 | Window Closed / Lapsed |