US2458013A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Selenium rectifier element and method of manufacturing same
Assignee: ABB Norden Holding AB
•
Filing: 1945-02-27
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Granted: 1949-01-04
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Expires: 1965-02-27
Abstract
No abstract record available.
Inventors
- 👤 Malmberg Tore Gunnar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:48
CPC Classifications
H; H10; H10D; H10D48/00; H10D48/01; H10D48/04; H10D48/043; H10D48/046; H10D48/045; H10D48/047
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1866351A
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US1926884A
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US2137428A
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US2246161A
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US2279746A
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US2375355A
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US2361157A
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US2391194A
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US2380880A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-01-04 | 1952-07-05 | 1953-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-01-04 | 1956-07-05 | 1957-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-01-04 | 1960-07-05 | 1961-01-04 | $7700.00 | Window Closed / Lapsed |