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2489520
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Patent Grant
2489520
References
Source
Patent Number
2,489,520
Date Filed
Not available
Date Issued
Tuesday, November 29, 1949
74 years ago
CPC
G11B5/642 - self supporting magnetic material
US Classifications
148 - Metal treatment
029 - Metal working
360 - Dynamic magnetic information storage or retrieval
G9B - INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
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