US2763734A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Push-pull circuit for amplifying or producing high-frequency oscillations
Assignee: Hartford National Bank and Trust Co
•
Filing: 1952-08-16
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Granted: 1956-09-18
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Expires: 1972-08-16
Abstract
No abstract record available.
Inventors
- 👤 Mulder Harm Hendrik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:01
CPC Classifications
H; H03; H03B; H03B5/00; H03B5/08; H03B5/10; H03B5/18; H03B5/1817; H03B5/1835; H03F; H03F1/00; H03F1/08; H03F3/00; H03F3/54
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1666158A
Cited
US1956582A
Cited
US1997283A
Cited
US2151464A
Cited
US2171670A
Cited
US2262365A
Cited
US2538158A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-09-18 | 1960-03-19 | 1960-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-18 | 1964-03-19 | 1964-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-18 | 1968-03-19 | 1968-09-18 | $7700.00 | Window Closed / Lapsed |