Patent US2430835A successfully refreshed from Google Patents.
US2430835A
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US
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Mixing circuits comprising discharge tubes
Assignee: Hartford National Bank and Trust Co
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Filing: 1943-05-21
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Granted: 1947-11-11
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Expires: 1963-05-21
Abstract
No abstract record available.
Inventors
- 👤 Strutt Maximiliaan Julius Otto
- 👤 Ziel Aldert Van Der
- 👤 Alma Gerrit Hendrik Petrus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:55
CPC Classifications
H; H03; H03F; H03F1/00; H03F1/26; H03F1/28; H03D; H03D7/00; H03D7/02; H03D7/06; H03D7/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1742773A
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US2058430A
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US2227604A
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US2236801A
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US2253853A
Cited
US2296107A
Cited
US2315658A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-11-10 | 1951-05-12 | 1951-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-11-10 | 1955-05-12 | 1955-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-11-10 | 1959-05-12 | 1959-11-11 | $7700.00 | Window Closed / Lapsed |