US1865562A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical regulating apparatus
Assignee: Hitachi Rail STS USA Inc
•
Filing: 1931-01-22
•
Granted: 1932-07-05
•
Expires: 1951-01-22
Abstract
No abstract record available.
Inventors
- 👤 Robert M Gilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:39
CPC Classifications
H; H02; H02J; H02J7/00; H02J7/02; H02J7/04; H02J7/12; H02J7/90; H02J7/933
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) | 1935-07-05 | 1936-01-04 | 1936-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-07-05 | 1940-01-04 | 1940-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-07-05 | 1944-01-04 | 1944-07-05 | $7700.00 | Window Closed / Lapsed |