US1535595A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Negative-phase-sequence balancer for polyphase furnaces
Assignee: Westinghouse Electric Corp
•
Filing: 1922-04-13
•
Granted: 1925-04-28
•
Expires: 1942-04-13
Abstract
No abstract record available.
Inventors
- 👤 Charles Le G Fortescue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:30
CPC Classifications
H; H02; H02J; H02J3/00; H02J3/26; Y; Y02; Y02E; Y02E40/00; Y02E40/50
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1928-04-27 | 1928-10-27 | 1929-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1932-04-27 | 1932-10-27 | 1933-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1936-04-27 | 1936-10-27 | 1937-04-28 | $7700.00 | Window Closed / Lapsed |