US2944164A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical circuits using two-electrode devices
Assignee: International Standard Electric Corp
•
Filing: 1954-05-13
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Granted: 1960-07-05
•
Expires: 1974-05-13
Abstract
No abstract record available.
Inventors
- 👤 Odell Alexander Douglas
- 👤 Hartley Henry Frederick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:12
CPC Classifications
H; H03; H03K; H03K23/00; H03K23/002; H03K3/00; H03K3/02; H03K3/313
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2581273A
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US2757286A
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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) | 1963-07-05 | 1964-01-04 | 1964-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-05 | 1968-01-04 | 1968-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-05 | 1972-01-04 | 1972-07-05 | $7700.00 | Window Closed / Lapsed |