Patent US2871371A successfully refreshed from Google Patents.
US2871371A
Expired / Lapsed
US
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Wide-band interference light filter
Assignee: RCA Corp
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Filing: 1954-05-06
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Granted: 1959-01-27
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Expires: 1974-05-06
Abstract
No abstract record available.
Inventors
- 👤 Gray Sidney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:18
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/86; H01J29/89; H01J29/898; G; G02; G02B; G02B5/00; G02B5/20; G02B5/28; G02B5/281; G02B5/282; G02B5/285; H01J29/02; H01J29/10; H01J29/36; H01J29/39; H01J29/45
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) | 1962-01-26 | 1962-07-28 | 1963-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-26 | 1966-07-28 | 1967-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-26 | 1970-07-28 | 1971-01-27 | $7700.00 | Window Closed / Lapsed |