Patent US3010085A successfully refreshed from Google Patents.
US3010085A
Expired / Lapsed
US
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Isolators in lumped constant systems
Assignee: AT&T Inc
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Filing: 1958-11-17
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Granted: 1961-11-21
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Expires: 1978-11-17
Abstract
No abstract record available.
Inventors
- 👤 Seidel Harold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:28
CPC Classifications
H; H03; H03H; H03H7/00; H03H7/002
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2647239A
Cited
GB716257A
Cited
US2697759A
Cited
US2764676A
Cited
DE1041549B
Cited
US2944229A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-11-20 | 1965-05-22 | 1965-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-11-20 | 1969-05-22 | 1969-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-11-20 | 1973-05-22 | 1973-11-21 | $7700.00 | Window Closed / Lapsed |