Patent NL35359C successfully refreshed from Google Patents.
Patent US5021684A successfully refreshed from Google Patents.
Patent AT109221B successfully refreshed from Google Patents.
Patent US2889541A successfully refreshed from Google Patents.
US2889541A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Saturable reactor circuit
Assignee: Unisys Corp
•
Filing: 1955-03-18
•
Granted: 1959-06-02
•
Expires: 1975-03-18
Abstract
No abstract record available.
Inventors
- 👤 Steven J Huss
- 👤 Robert E Wesslund
- 👤 Gordon W Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:16
CPC Classifications
H; H03; H03K; H03K19/00; H03K19/02; H03K19/16
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) | 1962-06-01 | 1962-12-01 | 1963-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-01 | 1966-12-01 | 1967-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-01 | 1970-12-01 | 1971-06-02 | $7700.00 | Window Closed / Lapsed |