US2908592A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing a selenium rectifier
Assignee: International Standard Electric Corp
•
Filing: 1956-01-11
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Granted: 1959-10-13
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Expires: 1976-01-11
Abstract
No abstract record available.
Inventors
- 👤 Strosche Hermann Karl Josef
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:49
CPC Classifications
D; D06; D06B; D06B3/00; D06B3/04; H; H10; H10D; H10D48/00; H10D48/01; H10D48/04; H10D48/042; H10D48/043; H10D48/0431; H10D48/044; H10D48/046; H10D48/047; H10D99/00; H10W; H10W90/00; D06B2700/00; D06B2700/25; Y; Y10; Y10S; Y10S62/00; Y10S62/20; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12535; Y10T428/12681; Y10T428/12708
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2279746A
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US2361157A
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US2356094A
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FR938208A
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US2370493A
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US2554237A
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US2479301A
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DE926987C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-10-12 | 1963-04-13 | 1963-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-12 | 1967-04-13 | 1967-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-12 | 1971-04-13 | 1971-10-13 | $7700.00 | Window Closed / Lapsed |