US2585734A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Leakage indicator and protective equipment for direct current distributing circuits
Assignee: Individual
•
Filing: 1948-01-02
•
Granted: 1952-02-12
•
Expires: 1968-01-02
Abstract
No abstract record available.
Inventors
- 👤 Fred J Bucher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:06
CPC Classifications
H; H02; H02H; H02H3/00; H02H3/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US396582A
Cited
US1300546A
Cited
GB289538A
Cited
US2010701A
Cited
US2131386A
Cited
US2382647A
Cited
US2376658A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-02-11 | 1955-08-13 | 1956-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-11 | 1959-08-13 | 1960-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-11 | 1963-08-13 | 1964-02-12 | $7700.00 | Window Closed / Lapsed |