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3890622
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Information
Patent Grant
3890622
References
Source
Patent Number
3,890,622
Date Filed
Not available
Date Issued
Tuesday, June 17, 1975
48 years ago
CPC
H04N1/23 - Reproducing arrangements
H04N1/16 - using a rotating helical element
US Classifications
347 - Incremental printing of symbolic information
242 - Winding, tensioning, or guiding
346 - Recorders
400 - Typewriting machines
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