US2528194A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuit testing repeating circuit breaker
Assignee: McGraw Electric Co
•
Filing: 1949-01-13
•
Granted: 1950-10-31
•
Expires: 1969-01-13
Abstract
No abstract record available.
Inventors
- 👤 Anthony Van Ryan
- 👤 Rigert Max
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:25
CPC Classifications
H; H01; H01H; H01H75/00; H01H75/02; H01H75/04; G; G01; G01R; G01R31/00; G01R31/327; G01R31/3271; G01R31/3275
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
NL12393C
Cited
US1534724A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-10-30 | 1954-05-01 | 1954-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-30 | 1958-05-01 | 1958-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-30 | 1962-05-01 | 1962-10-31 | $7700.00 | Window Closed / Lapsed |