Patent US2154375A successfully refreshed from Google Patents.
Patent US2937285A successfully refreshed from Google Patents.
US2937285A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Saturable switch
Assignee: Research Corp
•
Filing: 1953-03-31
•
Granted: 1960-05-17
•
Expires: 1973-03-31
Abstract
No abstract record available.
Inventors
- 👤 Kenneth H Olsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:52
CPC Classifications
G; G06; G06F; G06F7/00; G06F7/38; G06F7/383; G11; G11C; G11C19/00; G11C19/005; H; H03; H03K; H03K17/00; H03K17/51; H03K17/80; H03K17/81
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1547964A
Cited
US2021099A
Cited
US2570716A
Cited
US2722565A
Cited
US2733860A
Cited
US2691152A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-17 | 1963-11-16 | 1964-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-17 | 1967-11-16 | 1968-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-17 | 1971-11-16 | 1972-05-17 | $7700.00 | Window Closed / Lapsed |