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1687633
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Information
Patent Grant
1687633
References
Source
Patent Number
1,687,633
Date Filed
Not available
Date Issued
Tuesday, October 16, 1928
96 years ago
CPC
G06C5/02 - Housing Framworks
H04M1/11 - Supports for sets
US Classifications
346 - Recorders
281 - Books, strips, and leaves
462 - Books, strips, and leaves for manifolding
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