Patent US2658704A successfully refreshed from Google Patents.
US2658704A
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US
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Assignee: Individual
•
Filing: 1950-07-29
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Granted: 1953-11-10
•
Expires: 1970-07-29
Abstract
No abstract record available.
Inventors
- 👤 Smith Hamilton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:25
CPC Classifications
H; H02; H02G; H02G3/00; H02G3/02; H02G3/08; H02G3/12; H02G3/123
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US210283A
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US877288A
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US1028499A
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US1003985A
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US2138812A
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US2321640A
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US2309189A
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US2320400A
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US2432555A
Cited
US2453535A
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US2586728A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-09 | 1957-05-11 | 1957-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-09 | 1961-05-11 | 1961-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-09 | 1965-05-11 | 1965-11-10 | $7700.00 | Window Closed / Lapsed |