US2578499A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surge insulation tester
Assignee: Wagner Electric Corp
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Filing: 1947-08-01
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Granted: 1951-12-11
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Expires: 1967-08-01
Abstract
No abstract record available.
Inventors
- 👤 Earl W Baucr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:57
CPC Classifications
G; G01; G01R; G01R31/00; G01R31/50; G01R31/72; G01R31/52
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-10 | 1955-06-11 | 1955-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-10 | 1959-06-11 | 1959-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-10 | 1963-06-11 | 1963-12-11 | $7700.00 | Window Closed / Lapsed |