US2676263A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Impulse generator
Assignee: Hartford National Bank and Trust Co
•
Filing: 1947-12-06
•
Granted: 1954-04-20
•
Expires: 1967-12-06
Abstract
No abstract record available.
Inventors
- 👤 Hugenholtz Eduard Herman
- 👤 Hoogendoorn Johannes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:06
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/04; H03K3/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1919795A
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US2212202A
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US2215776A
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CH210447A
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US2230097A
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US2484763A
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US2373223A
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US2452951A
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US2540524A
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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) | 1957-04-19 | 1957-10-19 | 1958-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-19 | 1961-10-19 | 1962-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-19 | 1965-10-19 | 1966-04-20 | $7700.00 | Window Closed / Lapsed |