US3047673A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotatable magnetic systems for transforming audio currents
Assignee: Tenovis GmbH and Co KG
•
Filing: 1958-01-07
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Granted: 1962-07-31
•
Expires: 1978-01-07
Abstract
No abstract record available.
Inventors
- 👤 Anton M Springer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:54
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/48; G11B5/52; G11B5/53; G11B15/00; G11B15/18; G11B15/1808; G11B27/00; G11B27/005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2352023A
Cited
US2666813A
Cited
US2673248A
Cited
US2909616A
Cited
FR1107292A
Cited
GB760874A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-30 | 1966-01-29 | 1966-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-30 | 1970-01-29 | 1970-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-30 | 1974-01-29 | 1974-07-31 | $7700.00 | Window Closed / Lapsed |