Patent US5549690A successfully refreshed from Google Patents.
US2606283A
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US
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Mixing circuit arrangement
Assignee: Hartford National Bank and Trust Co
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Filing: 1946-09-10
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Granted: 1952-08-05
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Expires: 1966-09-10
Abstract
No abstract record available.
Inventors
- 👤 Adelbert Van Weel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:43
CPC Classifications
H; H03; H03F; H03F1/00; H03F1/08; H03D; H03D7/00; H03D7/14; H03D7/1416; H04; H04B; H04B1/00; H04B1/06; H04B1/16; H04B1/163
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1596102A
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US1767508A
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US1968610A
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US2107395A
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US2088432A
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US2453078A
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US2434474A
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US2479537A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-08-05 | 1956-02-04 | 1956-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-05 | 1960-02-04 | 1960-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-05 | 1964-02-04 | 1964-08-05 | $7700.00 | Window Closed / Lapsed |