US2853538A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical bushings
Assignee: Westinghouse Electric Corp
•
Filing: 1953-09-28
•
Granted: 1958-09-23
•
Expires: 1973-09-28
Abstract
No abstract record available.
Inventors
- 👤 James H Frakes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:15
CPC Classifications
H; H01; H01B; H01B17/00; H01B17/26; H01B17/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1821787A
Cited
US1869475A
Cited
FR820020A
Cited
US2285594A
Cited
US2292031A
Cited
US2569503A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-22 | 1962-03-24 | 1962-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-22 | 1966-03-24 | 1966-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-22 | 1970-03-24 | 1970-09-23 | $7700.00 | Window Closed / Lapsed |