US3534177A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic transducer head having electrically conductive core supporting means surrounded by a magnetic housing
Assignee: IIT Research Institute
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Filing: 1967-04-05
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Granted: 1970-10-13
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Expires: 1987-04-05
Abstract
No abstract record available.
Inventors
- 👤 Marvin Camras
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:09
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/10; G11B5/105; G11B23/00; G11B23/50; G11B23/502; G11B5/127; G11B5/17; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49021; Y10T29/49027
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2683774A
Cited
US2999135A
Cited
US2852618A
Cited
US3026379A
Cited
US3019303A
Cited
US3211843A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-12 | 1974-04-13 | 1974-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-12 | 1978-04-13 | 1978-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-12 | 1982-04-13 | 1982-10-13 | $7700.00 | Window Closed / Lapsed |