US2666102A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mechanical rectifier
Assignee: Licentia Patent Verwaltungs GmbH
•
Filing: 1950-04-13
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Granted: 1954-01-12
•
Expires: 1970-04-13
Abstract
No abstract record available.
Inventors
- 👤 Koppelmann Floris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 06:12
CPC Classifications
H; H02; H02M; H02M1/00; H02M1/20; H02M1/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US731375A
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US1286795A
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US1807376A
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US2128427A
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US2289086A
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US2276698A
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US2353427A
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US2375416A
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US2439747A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-01-11 | 1957-07-13 | 1958-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-01-11 | 1961-07-13 | 1962-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-01-11 | 1965-07-13 | 1966-01-12 | $7700.00 | Window Closed / Lapsed |