Patent US3764536A successfully refreshed from Google Patents.
Patent US2728009A successfully refreshed from Google Patents.
US2728009A
Expired / Lapsed
US
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Cathode-ray tube with target support
Assignee: RCA Corp
•
Filing: 1950-11-14
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Granted: 1955-12-20
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Expires: 1970-11-14
Abstract
No abstract record available.
Inventors
- 👤 Richard D Faulkner
- 👤 Bryce E Barnes
- 👤 Milton J Grimes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:21
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/02; H01J29/06; H01J29/07; H01J29/073; H01J29/46; H01J29/82
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-12-19 | 1959-06-20 | 1959-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-19 | 1963-06-20 | 1963-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-19 | 1967-06-20 | 1967-12-20 | $7700.00 | Window Closed / Lapsed |