Patent US2463632A successfully refreshed from Google Patents.
US2463632A
Expired / Lapsed
US
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Variable electronic capacitance device
Assignee: Hartford National Bank and Trust Co
•
Filing: 1944-08-11
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Granted: 1949-03-08
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Expires: 1964-08-11
Abstract
No abstract record available.
Inventors
- 👤 Labin Edouard
- 👤 Levialdi Andres
- 👤 Ziegler Marc
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:35
CPC Classifications
H; H03; H03J; H03J7/00; H03J7/02; H03J7/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1222916A
Cited
US2165308A
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US2193710A
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US2242275A
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US2217198A
Cited
US2275480A
Cited
US2281935A
Cited
US2243829A
Cited
US2305617A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-03-07 | 1952-09-06 | 1953-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-03-07 | 1956-09-06 | 1957-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-03-07 | 1960-09-06 | 1961-03-08 | $7700.00 | Window Closed / Lapsed |