US2770739A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trigger circuits
Assignee: International Standard Electric Corp
•
Filing: 1954-02-15
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Granted: 1956-11-13
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Expires: 1974-02-15
Abstract
No abstract record available.
Inventors
- 👤 Grayson Harry
- 👤 Dunkley Rowland Arthur George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:30
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/45; H03K3/49; H03K17/00; H03K17/51; H03K17/80; H03K23/00; H03K23/76; H04; H04Q; H04Q3/00; H04Q3/42; H04Q3/52
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-11-13 | 1960-05-14 | 1960-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-13 | 1964-05-14 | 1964-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-13 | 1968-05-14 | 1968-11-13 | $7700.00 | Window Closed / Lapsed |