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Patent US2858356A successfully refreshed from Google Patents.
US2858356A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High voltage transformer assemblies
Assignee: Individual
•
Filing: 1953-01-21
•
Granted: 1958-10-28
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Expires: 1973-01-21
Abstract
No abstract record available.
Inventors
- 👤 Setchell Barton Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:23
CPC Classifications
H; H01; H01F; H01F27/00; H01F27/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1543533A
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US1603580A
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US1821016A
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US1976608A
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US2140707A
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US2184574A
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GB613973A
Cited
US2454962A
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US2425250A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-27 | 1962-04-28 | 1962-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-27 | 1966-04-28 | 1966-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-27 | 1970-04-28 | 1970-10-28 | $7700.00 | Window Closed / Lapsed |