US3040231A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-balancing power supply system having a single phase output energized by a multiphase source
Assignee: Park Ohio Holdings Corp
•
Filing: 1958-03-31
•
Granted: 1962-06-19
•
Expires: 1978-03-31
Abstract
No abstract record available.
Inventors
- 👤 Paul P Biringer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:16
CPC Classifications
H; H01; H01F; H01F38/00; H01F38/02; H01F38/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1157730A
Cited
US1537371A
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US2313440A
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US2383177A
Cited
US2367625A
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US2451189A
Cited
US2727159A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-06-18 | 1965-12-18 | 1966-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-06-18 | 1969-12-18 | 1970-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-06-18 | 1973-12-18 | 1974-06-19 | $7700.00 | Window Closed / Lapsed |