US3149296A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shielded transformer
Assignee: Gulton Industries Inc
•
Filing: 1961-01-03
•
Granted: 1964-09-15
•
Expires: 1981-01-03
Abstract
No abstract record available.
Inventors
- 👤 Jay A Cox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:22
CPC Classifications
H; H01; H01F; H01F27/00; H01F27/28; H01F27/288; H01F29/00; H01F29/14; H01F29/143
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US971667A
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US1362138A
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US2081979A
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FR901838A
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US2462106A
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US2599182A
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US2963777A
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US2904762A
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US2974401A
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US2987664A
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US3004206A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-15 | 1968-03-16 | 1968-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-15 | 1972-03-16 | 1972-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-15 | 1976-03-16 | 1976-09-15 | $7700.00 | Window Closed / Lapsed |