US3484761A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pulse transformers comprising stacked ferrite blocks
Assignee: International Standard Electric Corp
•
Filing: 1966-05-11
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Granted: 1969-12-16
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Expires: 1986-05-11
Abstract
No abstract record available.
Inventors
- 👤 George Aneurin Howells
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:38
CPC Classifications
G; G11; G11C; G11C11/00; G11C11/02; G11C11/06; G11C11/06007; H; H01; H01F; H01F19/00; H01F19/04; H01F19/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2776411A
Cited
US2825892A
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US3177473A
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US3222656A
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US3351879A
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US3259888A
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 |