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US3376533A
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Differential transformers
Assignee: Pickering Controls Inc
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Filing: 1967-05-09
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Granted: 1968-04-02
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Expires: 1987-05-09
Abstract
No abstract record available.
Inventors
- 👤 Chass Jacob
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:12
CPC Classifications
H; H01; H01F; H01F29/00; H01F29/08; H01F29/10; H01F27/00; H01F27/34; H01F27/38; H01H; H01H83/00; H01H83/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3017589A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-02 | 1971-10-02 | 1972-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-02 | 1975-10-02 | 1976-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-02 | 1979-10-02 | 1980-04-02 | $7700.00 | Window Closed / Lapsed |