US2997606A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High speed switching circuit
Assignee: Westinghouse Electric Corp
•
Filing: 1959-11-27
•
Granted: 1961-08-22
•
Expires: 1979-11-27
Abstract
No abstract record available.
Inventors
- 👤 Hamburger Theodore
- 👤 Jr Charles H Wood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:04
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/04; H03K17/041; H03K17/0412; H03K17/04126
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2647240A
Cited
US2871378A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-21 | 1965-02-20 | 1965-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-21 | 1969-02-20 | 1969-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-21 | 1973-02-20 | 1973-08-22 | $7700.00 | Window Closed / Lapsed |