Patent US2589084A successfully refreshed from Google Patents.
US2589084A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Current transformer short circuiting switch
Assignee: Allis Chalmers Corp
•
Filing: 1949-12-22
•
Granted: 1952-03-11
•
Expires: 1969-12-22
Abstract
No abstract record available.
Inventors
- 👤 Sven A Hoffman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:29
CPC Classifications
H; H01; H01H; H01H33/00; H01H33/002
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US305045A
Cited
US1351124A
Cited
US1784697A
Cited
US1006140A
Cited
US1189900A
Cited
US1156282A
Cited
US1344925A
Cited
US2420880A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-03-11 | 1955-09-10 | 1956-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-11 | 1959-09-10 | 1960-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-11 | 1963-09-10 | 1964-03-11 | $7700.00 | Window Closed / Lapsed |