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PERSONAL INFORMATION SYSTEM
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Publication number 20200160953
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Publication date May 21, 2020
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DATCARD SYSTEMS, INC.
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Christopher M. Duma
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G06 - COMPUTING CALCULATING COUNTING
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PERSONAL INFORMATION SYSTEM
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Publication number 20190006029
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Publication date Jan 3, 2019
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DATCARD SYSTEMS, INC.
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Christopher M. Duma
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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PERSONAL INFORMATION SYSTEM
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Publication number 20170300638
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Publication date Oct 19, 2017
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DATCARD SYSTEMS, INC.
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Christopher M. Duma
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G06 - COMPUTING CALCULATING COUNTING
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PERSONAL INFORMATION SYSTEM
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Publication number 20150324529
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Publication date Nov 12, 2015
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DATCARD SYSTEMS, INC.
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Christopher M. Duma
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G06 - COMPUTING CALCULATING COUNTING
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PERSONAL INFORMATION SYSTEM
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Publication number 20110301981
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Publication date Dec 8, 2011
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DATCARD SYSTEMS, INC.
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Christopher M. Duma
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G06 - COMPUTING CALCULATING COUNTING
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