Patent US3492522A successfully refreshed from Google Patents.
US3492522A
Expired / Lapsed
US
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Shadow mask supported by v-shaped springs having apices directed toward gun
Assignee: Zenith Electronics LLC
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Filing: 1967-08-15
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Granted: 1970-01-27
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Expires: 1987-08-15
Abstract
No abstract record available.
Inventors
- 👤 Nicholas P Pappadis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:18
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/02; H01J29/06; H01J29/07; H01J29/073
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2846608A
Cited
US3334259A
Cited
US3343024A
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US3330980A
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US3370194A
Cited
US3399319A
Cited
US3387160A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-26 | 1973-07-28 | 1974-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-26 | 1977-07-28 | 1978-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-26 | 1981-07-28 | 1982-01-27 | $7700.00 | Window Closed / Lapsed |