Patent US3390033A successfully refreshed from Google Patents.
US3390033A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of separating frit sealed parts of an electron tube
Assignee: RCA Corp
•
Filing: 1964-08-13
•
Granted: 1968-06-25
•
Expires: 1984-08-13
Abstract
No abstract record available.
Inventors
- 👤 Martin K Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:21
CPC Classifications
H; H01; H01J; H01J9/00; H01J9/24; H01J9/26; H01J9/263; H01J9/50; H01J2893/00; H01J2893/0072; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/82; Y10; Y10T; Y10T156/00; Y10T156/11; Y10T156/1153; Y10T29/00; Y10T29/49; Y10T29/49815; Y10T29/49821
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2843925A
Cited
US2884312A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-06-25 | 1971-12-25 | 1972-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-25 | 1975-12-25 | 1976-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-25 | 1979-12-25 | 1980-06-25 | $7700.00 | Window Closed / Lapsed |