US2417552A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transformer bushing
Assignee: Essex Wire Corp
•
Filing: 1944-05-30
•
Granted: 1947-03-18
•
Expires: 1964-05-30
Abstract
No abstract record available.
Inventors
- 👤 Elmer C Ilker
- 👤 Donald O Schwennesen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:35
CPC Classifications
H; H01; H01B; H01B17/00; H01B17/26; H01B17/30; H01B17/303; H01B17/305
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2047031A
Cited
US1766593A
Cited
US1932456A
Cited
US2048891A
Cited
US2211659A
Cited
US2235429A
Cited
US2264816A
Cited
US2348254A
Cited
US2356831A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-03-17 | 1950-09-16 | 1951-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-03-17 | 1954-09-16 | 1955-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-03-17 | 1958-09-16 | 1959-03-18 | $7700.00 | Window Closed / Lapsed |