Patent US3459467A successfully refreshed from Google Patents.
US3459467A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronically controlled interference filter
Assignee: Radiation Inc
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Filing: 1964-08-10
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Granted: 1969-08-05
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Expires: 1984-08-10
Abstract
No abstract record available.
Inventors
- 👤 Misha I Kantor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:13
CPC Classifications
G; G09; G09G; G09G3/00; G09G3/001; G02; G02B; G02B5/00; G02B5/20; G02B5/28; G02B5/284; G02F; G02F1/00; G02F1/01; G02F1/21
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-08-04 | 1973-02-03 | 1973-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-04 | 1977-02-03 | 1977-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-04 | 1981-02-03 | 1981-08-05 | $7700.00 | Window Closed / Lapsed |