US2993266A
Expired / Lapsed
US
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Method of making a capacitor employing film-forming metal electrode
Assignee: AT&T Inc
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Filing: 1958-06-16
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Granted: 1961-07-25
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Expires: 1978-06-16
Abstract
No abstract record available.
Inventors
- 👤 Robert W Berry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:43
CPC Classifications
H; H01; H01G; H01G4/00; H01G4/002; H01G4/005; H01G4/008; C; C23; C23C; C23C14/00; C23C14/22; C23C14/34; C23C14/35; C25; C25D; C25D11/00; C25D11/02; H01B; H01B1/00; H01G4/018; H01G4/06; H01G4/08; H01G4/10; H01G9/00; H10; H10N; H10N97/00; H10W; H10W99/00; H10W72/00; H10W72/50; H10W72/551; H10W72/552; H10W72/5524; Y; Y10; Y10S; Y10S148/00; Y10S148/169; Y10T; Y10T29/00; Y10T29/43; Y10T29/435
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) | 1964-07-24 | 1965-01-23 | 1965-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-24 | 1969-01-23 | 1969-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-24 | 1973-01-23 | 1973-07-25 | $7700.00 | Window Closed / Lapsed |