US2702833A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and means for making magnetic records
Assignee: IIT Research Institute
•
Filing: 1948-01-26
•
Granted: 1955-02-22
•
Expires: 1968-01-26
Abstract
No abstract record available.
Inventors
- 👤 Camras Marvin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:03
CPC Classifications
G; G11; G11B; G11B5/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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DE701552C
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US2038647A
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CH197028A
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US2213631A
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US2213244A
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US2254034A
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US2357389A
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US2433207A
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US2431541A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-02-21 | 1958-08-23 | 1959-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-02-21 | 1962-08-23 | 1963-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-02-21 | 1966-08-23 | 1967-02-22 | $7700.00 | Window Closed / Lapsed |