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The Grey Lab. Establishment
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Vaduz, FL
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Patent Grant
Checking apparatus for documents
Patent number
4,025,759
Issue date
May 24, 1977
The Grey Lab. Establishment
Kurt M. Scheffel
G06 - COMPUTING CALCULATING COUNTING
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Patent Grant
Apparatus for the storage and reading of data combined from binary...
Patent number
3,935,431
Issue date
Jan 27, 1976
The Grey Lab. Establishment
Kurt Scheffel
G06 - COMPUTING CALCULATING COUNTING
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