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Patent US3548393A successfully refreshed from Google Patents.
US3548393A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rack type mounting plate for magnetic head
Assignee: D'INSTRUMENTATION SCHLUBERGER SOC
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Filing: 1967-12-11
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Granted: 1970-12-15
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Expires: 1987-12-11
Abstract
No abstract record available.
Inventors
- 👤 Andre Montel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 04:21
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/127; G11B5/29; G11B5/147; G11B5/1475; G11B5/17
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2888522A
Cited
US2991511A
Cited
US3064333A
Cited
US3349193A
Cited
US3311711A
Cited
US3417465A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-14 | 1974-06-15 | 1974-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-14 | 1978-06-15 | 1978-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-14 | 1982-06-15 | 1982-12-15 | $7700.00 | Window Closed / Lapsed |