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1820303
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Information
Patent Grant
1820303
References
Source
Patent Number
1,820,303
Date Filed
Not available
Date Issued
Tuesday, August 25, 1931
92 years ago
CPC
G03D15/006 - Retouching apparatus
Y10S425/249 - Character
Y10S430/152 - Making camera copy
Y10T225/10 - Methods
Y10T225/379 - Breaking tool intermediate spaced work supports
US Classifications
264 - Plastic and nonmetallic article shaping or treating: processes
007 - Compound tools
225 - Severing by tearing or breaking
425 - Plastic article or earthenware shaping or treating: apparatus
430 - Radiation imagery chemistry: process, composition, or product thereof
493 - Manufacturing container or tube from paper
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