US2940033A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuit for sensing the highest phase voltage of a polyphase alternating current generator
Assignee: Jack and Heintz Inc
•
Filing: 1956-09-10
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Granted: 1960-06-07
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Expires: 1976-09-10
Abstract
No abstract record available.
Inventors
- 👤 Howard M Mcconnell
- 👤 Ralph J Leppla
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:22
CPC Classifications
H; H02; H02P; H02P9/00; H02P9/14; H02P2101/00; H02P2101/30
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) | 1963-06-07 | 1963-12-07 | 1964-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-07 | 1967-12-07 | 1968-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-07 | 1971-12-07 | 1972-06-07 | $7700.00 | Window Closed / Lapsed |