US2990480A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Impedance controlled cross-coupled one-shot multivibrator
Assignee: Individual
•
Filing: 1958-07-15
•
Granted: 1961-06-27
•
Expires: 1978-07-15
Abstract
No abstract record available.
Inventors
- 👤 Ellsworth Robert Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:47
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/04; H03K3/05; H03K3/06; H03K3/10; H03K3/26; H03K3/28; H03K3/281; H03K3/284
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB635137A
Cited
US2778978A
Cited
US2859340A
Cited
US2803747A
Cited
US2844723A
Cited
US2903607A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-26 | 1964-12-26 | 1965-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-26 | 1968-12-26 | 1969-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-26 | 1972-12-26 | 1973-06-27 | $7700.00 | Window Closed / Lapsed |