Patent US3456076A successfully refreshed from Google Patents.
US3456076A
Expired / Lapsed
US
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Implosion protection for cathode ray tubes
Assignee: Westinghouse Electric Corp
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Filing: 1964-11-24
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Granted: 1969-07-15
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Expires: 1984-11-24
Abstract
No abstract record available.
Inventors
- 👤 Douglas A Griswold
- 👤 Edward F Dick
- 👤 Charles M Kesser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:08
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/86; H01J29/87
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA607500A
Cited
US2785820A
Cited
US2874017A
Cited
US3220592A
Cited
US3220593A
Cited
US3248480A
Cited
US3271516A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-14 | 1973-01-13 | 1973-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-14 | 1977-01-13 | 1977-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-14 | 1981-01-13 | 1981-07-15 | $7700.00 | Window Closed / Lapsed |