Patent US2897392A successfully refreshed from Google Patents.
US2897392A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color television tube mask and frame assembly
Assignee: Zenith Electronics LLC
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Filing: 1956-02-09
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Granted: 1959-07-28
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Expires: 1976-02-09
Abstract
No abstract record available.
Inventors
- 👤 Joseph P Fiore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:55
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/02; H01J29/06; H01J29/07; H01J29/073; G; G03; G03B; G03B15/00; H01J2229/00; H01J2229/07; H01J2229/0727; H01J2229/0766; H01J2229/0772
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) | 1962-07-27 | 1963-01-26 | 1963-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-07-27 | 1967-01-26 | 1967-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-07-27 | 1971-01-26 | 1971-07-28 | $7700.00 | Window Closed / Lapsed |