US2658762A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic record transducing system and guide structure
Assignee: Clevite Corp
•
Filing: 1948-12-23
•
Granted: 1953-11-10
•
Expires: 1968-12-23
Abstract
No abstract record available.
Inventors
- 👤 Begun Semi Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:08
CPC Classifications
G; G11; G11B; G11B19/00; G11B19/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US714707A
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US759348A
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US746806A
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US908778A
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GB352391A
Cited
DE613925C
Cited
US1959423A
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US2142591A
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US2240305A
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US2278678A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-09 | 1957-05-11 | 1957-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-09 | 1961-05-11 | 1961-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-09 | 1965-05-11 | 1965-11-10 | $7700.00 | Window Closed / Lapsed |