US2360288A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Leakage indicator for alternating electric current circuits
Assignee: Hitachi Rail STS USA Inc
•
Filing: 1941-12-18
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Granted: 1944-10-10
•
Expires: 1961-12-18
Abstract
No abstract record available.
Inventors
- 👤 Stevens Sydney Arthur
- 👤 Peter Leslie Hurst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:39
CPC Classifications
G; G01; G01R; G01R27/00; G01R27/02; G01R27/16; G01R27/18
Claims Analysis
Total Claims: 0
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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) | 1947-10-10 | 1948-04-10 | 1948-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-10-10 | 1952-04-10 | 1952-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-10-10 | 1956-04-10 | 1956-10-10 | $7700.00 | Window Closed / Lapsed |