Patent US2473831A successfully refreshed from Google Patents.
US2473831A
Expired / Lapsed
US
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Glow tube rectifier
Assignee: Raytheon Co
•
Filing: 1944-02-24
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Granted: 1949-06-21
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Expires: 1964-02-24
Abstract
No abstract record available.
Inventors
- 👤 Paul W Stutsman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:02
CPC Classifications
H; H01; H01J; H01J17/00; H01J17/38; H01J17/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1807177A
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US2137198A
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US1772603A
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US1917739A
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US2217185A
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US2104128A
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US2201166A
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US2188159A
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US2223523A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-06-20 | 1952-12-20 | 1953-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-06-20 | 1956-12-20 | 1957-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-06-20 | 1960-12-20 | 1961-06-21 | $7700.00 | Window Closed / Lapsed |