US2985772A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Switching circuit
Assignee: Westinghouse Electric Corp
•
Filing: 1958-11-12
•
Granted: 1961-05-23
•
Expires: 1978-11-12
Abstract
No abstract record available.
Inventors
- 👤 Jr George F Pittman
- 👤 Richard O Decker
- 👤 Clarence I Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:47
CPC Classifications
H; H03; H03F; H03F3/00; H03F3/26; H03F3/20; H03F3/21; H03F3/217; H03K; H03K17/00; H03K17/51; H03K17/56; H03K17/60; H03K17/66; H03K17/661
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1964-05-22 | 1964-11-21 | 1965-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-22 | 1968-11-21 | 1969-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-22 | 1972-11-21 | 1973-05-23 | $7700.00 | Window Closed / Lapsed |