US2497166A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Parallel circuit arrangement for power tubes
Assignee: Stromberg Carlson Corp
•
Filing: 1944-06-06
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Granted: 1950-02-14
•
Expires: 1964-06-06
Abstract
No abstract record available.
Inventors
- 👤 Goldberg Harold
- 👤 Mers Edward F De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:28
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/53; H03K3/55
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1902227A
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US2140736A
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US1902460A
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US2123018A
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US2005875A
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US2400456A
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US2326550A
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US2348555A
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US2365450A
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US2359747A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-13 | 1953-08-15 | 1954-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-13 | 1957-08-15 | 1958-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-13 | 1961-08-15 | 1962-02-14 | $7700.00 | Window Closed / Lapsed |