Patent US3586593A successfully refreshed from Google Patents.
US3586593A
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Magnetically actuatable business machine card
Assignee: Individual
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Filing: 1969-12-22
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Granted: 1971-06-22
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Expires: 1989-12-22
Abstract
Abstract A MAGNETICALLY ACTUATABLE BUSINESS MACHINE CARD OF STABLE FLATNESS INCLUDING AN INTERMEDIATE LAMINA OF NONMAGNETIC AND MAGNETIC MATERIALS SANDWICHED BETWEEN A PAIR OF OUTER LAMINAE HAVING AXES OF GRAIN ORIENTATION AT AN ANGLE TO THE AXIS OF GRAIN ORIENTATION OF THE INTERMEDIATE NON-MAGNETIC MATEIAL.
Inventors
- 👤 Ernest A Dahl Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:10
CPC Classifications
B; B32; B32B; B32B37/00; B32B37/14; B32B37/16; B32B37/22; B32B38/00; B32B38/18; B32B38/1808; B32B38/1816; G; G06; G06K; G06K19/00; G06K19/02; G06K19/022; Y; Y10; Y10S; Y10S428/00; Y10S428/90; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1056; Y10T156/1057; Y10T156/1084; Y10T156/1089; Y10T156/1092; Y10T156/1093; Y10T156/1095; Y10T156/12; Y10T156/1317; Y10T156/1322; Y10T156/133; Y10T156/1343; Y10T156/17; Y10T156/1702; Y10T156/1712; Y10T156/1722; Y10T156/1727; Y10T428/00; Y10T428/15
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1974-06-21 | 1974-12-21 | 1975-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-21 | 1978-12-21 | 1979-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-21 | 1982-12-21 | 1983-06-22 | $7700.00 | Window Closed / Lapsed |