US2933565A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic transducers
Assignee: Siemens and Halske AG
•
Filing: 1954-04-07
•
Granted: 1960-04-19
•
Expires: 1974-04-07
Abstract
No abstract record available.
Inventors
- 👤 Neumann Helmut
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:48
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/127; G11B5/17; G11B5/133; G11B5/1335
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
38 words
A MAGNETIC TRANSDUCER FOR HIGH-FREQUENCY OSCILLA TIONS COMPRISING A CORE MADE OF OXIDE CERAMIC SINTERED MATERIAL SELECTED FROM THE CLASS OF MATERIALS CONSISTING OF NICKEL-ZINC AND MAGANESE-ZINC FERROMAGNETIC MATERIALS, SAID CORE FORMING POLE PIECES DEFINING A GAP HAVING
Claim 2
Dependent Claim
38 words
A MAGNETIC TRANSDUCER FOR HIGH-FREQUENCY OSCILLA TIONS COMPRISING A CORE MADE OF OXIDE CERAMIC SINTERED MATERIAL SELECTED FROM THE CLASS OF MATERIALS CONSISTING OF NICKEL-ZINC AND MAGANESE-ZINC FERROMAGNETIC MATERIALS, SAID CORE FORMING POLE PIECES DEFINING A GAP HAVING
References Cited (Backward Citations)
US2809237A
Cited
US2711945A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-19 | 1963-10-19 | 1964-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-19 | 1967-10-19 | 1968-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-19 | 1971-10-19 | 1972-04-19 | $7700.00 | Window Closed / Lapsed |