Patent US2606973A successfully refreshed from Google Patents.
US2606973A
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US
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Electric filter
Assignee: MYRON T SMITH
•
Filing: 1946-02-09
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Granted: 1952-08-12
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Expires: 1966-02-09
Abstract
No abstract record available.
Inventors
- 👤 Hermon H Scott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:47
CPC Classifications
H; H03; H03H; H03H11/00; H03H11/02; H03H11/04; H03H11/12; H03H11/1291; H03G; H03G5/00; H03G5/16; H03G5/18; H03G5/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1947822A
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US1950759A
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US2017270A
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US2002216A
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US2072708A
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US2053841A
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US2148030A
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US2263683A
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US2369952A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-08-12 | 1956-02-11 | 1956-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-12 | 1960-02-11 | 1960-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-12 | 1964-02-11 | 1964-08-12 | $7700.00 | Window Closed / Lapsed |