Patent US3551734A successfully refreshed from Google Patents.
US3551734A
Expired / Lapsed
US
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Multi-coil electron image control apparatus
Assignee: Westinghouse Electric Corp
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Filing: 1968-12-18
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Granted: 1970-12-29
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Expires: 1988-12-18
Abstract
No abstract record available.
Inventors
- 👤 Terence W O'keeffe
- 👤 James Vine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:20
CPC Classifications
H; H01; H01J; H01J9/00; H01J9/20; H01J9/233; H01J29/00; H01J29/46; H01J29/48; H01J29/50; H01J37/00; H01J37/02; H01J37/04; H01J37/06; H01J37/10; H01J37/14; H01J37/141; H01J37/21; H01J37/30; H01J2229/00; H01J2229/48; H01J2229/50; H01J2229/505
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-28 | 1974-06-29 | 1974-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-28 | 1978-06-29 | 1978-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-28 | 1982-06-29 | 1982-12-29 | $7700.00 | Window Closed / Lapsed |