US3480736A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic transducer
Assignee: Gauss Electrophysics Inc
•
Filing: 1966-09-22
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Granted: 1969-11-25
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Expires: 1986-09-22
Abstract
No abstract record available.
Inventors
- 👤 Keith O Johnson
- 👤 David Paul Gregg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:39
CPC Classifications
G; G11; G11B; G11B23/00; G11B23/0007; G11B5/00; G11B5/02; G11B5/027; G11B5/03; G11B5/127; G11B5/187; G11B5/245
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-24 | 1973-05-26 | 1973-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-24 | 1977-05-26 | 1977-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-24 | 1981-05-26 | 1981-11-25 | $7700.00 | Window Closed / Lapsed |