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US2729761A
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Thermionic rectifier tube
Assignee: Siemens Schuckertwerke AG
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Filing: 1952-04-01
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Granted: 1956-01-03
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Expires: 1972-04-01
Abstract
No abstract record available.
Inventors
- 👤 Bosch Max
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:14
CPC Classifications
H; H01; H01J; H01J13/00; H01J13/02; H01J13/20; H01J2893/00; H01J2893/0072; H01J2893/0088; H01J2893/009; H01J2893/0092
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1894806A
Cited
US2430653A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-02 | 1959-07-04 | 1960-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-02 | 1963-07-04 | 1964-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-02 | 1967-07-04 | 1968-01-03 | $7700.00 | Window Closed / Lapsed |