US2825759A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetically loaded anisotropic transmitting medium
Assignee: AT&T Inc
•
Filing: 1951-06-29
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Granted: 1958-03-04
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Expires: 1971-06-29
Abstract
No abstract record available.
Inventors
- 👤 Albert M Clogston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:56
CPC Classifications
H; H01; H01B; H01B11/00; H01B11/02; H01B11/12; H01B11/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1701278A
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US1903975A
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US2008286A
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US1996186A
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GB458505A
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US2228798A
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US2511610A
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US2576163A
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US2433181A
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US2769148A
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US2777896A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-03 | 1961-09-02 | 1962-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-03 | 1965-09-02 | 1966-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-03 | 1969-09-02 | 1970-03-04 | $7700.00 | Window Closed / Lapsed |