Patent US3070441A successfully refreshed from Google Patents.
US3070441A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Art of manufacturing cathode-ray tubes of the focus-mask variety
Assignee: RCA Corp
•
Filing: 1958-02-27
•
Granted: 1962-12-25
•
Expires: 1978-02-27
Abstract
No abstract record available.
Inventors
- 👤 James W Schwartz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:49
CPC Classifications
H; H01; H01J; H01J9/00; H01J9/20; H01J9/22; H01J9/227
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
FR866065A
Cited
US2376047A
Cited
US2539442A
Cited
GB634217A
Cited
US2755402A
Cited
US2851408A
Cited
US2767457A
Cited
US2910617A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-24 | 1966-06-25 | 1966-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-24 | 1970-06-25 | 1970-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-24 | 1974-06-25 | 1974-12-25 | $7700.00 | Window Closed / Lapsed |