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741693
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Patent Grant
741693
References
Source
Patent Number
741,693
Date Filed
Not available
Date Issued
Tuesday, October 20, 1903
121 years ago
CPC
B42D25/25 - Public transport tickets
B42D25/00 - Information-bearing cards or sheet-like structures characterised by identification or security features Manufacture thereof
Y10S283/901 - Concealed data
US Classifications
283 - Printed matter
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