US2986671A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Application of strip coating to cathode
Assignee: GTE Sylvania Inc
•
Filing: 1954-08-31
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Granted: 1961-05-30
•
Expires: 1974-08-31
Abstract
No abstract record available.
Inventors
- 👤 Donald R Kerstetter
- 👤 Ernest S Wennin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:13
CPC Classifications
H; H01; H01J; H01J9/00; H01J9/02; H01J9/04; H01J9/042; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1028; Y10T156/1033; Y10T156/11; Y10T156/1168; Y10T428/00; Y10T428/24; Y10T428/24479; Y10T428/24612; Y10T428/24752; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2935; Y10T428/2936; Y10T428/294; Y10T428/2958; Y10T428/31504; Y10T428/31678
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) | 1964-05-29 | 1964-11-28 | 1965-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-29 | 1968-11-28 | 1969-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-29 | 1972-11-28 | 1973-05-30 | $7700.00 | Window Closed / Lapsed |