Patent US2644600A successfully refreshed from Google Patents.
US2644600A
Expired / Lapsed
US
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Assignee: Individual
•
Filing: 1950-05-09
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Granted: 1953-07-07
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Expires: 1970-05-09
Abstract
No abstract record available.
Inventors
- 👤 Charles G Senif
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:20
CPC Classifications
H; H02; H02G; H02G3/00; H02G3/02; H02G3/08; H02G3/12; H02G3/123; H02G3/125
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2440324A
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US989854A
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US1026164A
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US1133946A
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US1207705A
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US1453017A
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US1791311A
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US1782546A
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US1795224A
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US2095914A
Cited
US2233548A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-06 | 1957-01-05 | 1957-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-06 | 1961-01-05 | 1961-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-06 | 1965-01-05 | 1965-07-07 | $7700.00 | Window Closed / Lapsed |