US2752497A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Developing electrical oscillation
Assignee: Hartford National Bank and Trust Co
•
Filing: 1950-10-25
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Granted: 1956-06-26
•
Expires: 1970-10-25
Abstract
No abstract record available.
Inventors
- 👤 Ensink Johannes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:38
CPC Classifications
H; H03; H03L; H03L7/00; H03L7/06; H03L7/08; H03L7/16; H03L7/20; H03L7/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2270023A
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US2201978A
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-06-26 | 1959-12-26 | 1960-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-26 | 1963-12-26 | 1964-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-26 | 1967-12-26 | 1968-06-26 | $7700.00 | Window Closed / Lapsed |