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3921934
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Information
Patent Grant
3921934
References
Source
Patent Number
3,921,934
Date Filed
Not available
Date Issued
Tuesday, November 25, 1975
48 years ago
CPC
G03B17/265 - specially adapted for motion picture film
G11B23/093 - the reels or cores being coaxial
US Classifications
242 - Winding, tensioning, or guiding
352 - Optics: motion pictures
G9B - INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
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