US3484727A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tapped transformer winding having high short circuit strength
Assignee: Allis Chalmers Corp
•
Filing: 1967-10-26
•
Granted: 1969-12-16
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Expires: 1987-10-26
Abstract
No abstract record available.
Inventors
- 👤 Hans J Weber
- 👤 William H Mutschler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:37
CPC Classifications
H; H01; H01F; H01F29/00; H01F29/02; H01F27/00; H01F27/28; H01F27/2847; H01F2027/2857
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US941362A
Cited
US1331077A
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GB364133A
Cited
US2253165A
Cited
US2840790A
Cited
US3271659A
Cited
US3078411A
Cited
US3395335A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-15 | 1973-06-16 | 1973-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-15 | 1977-06-16 | 1977-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-15 | 1981-06-16 | 1981-12-16 | $7700.00 | Window Closed / Lapsed |