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Rolf Boegli
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Regensdorf, CH
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last 30 patents
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Patent Grant
Process and apparatus for evaluating printing quality and for regul...
Patent number
4,649,502
Issue date
Mar 10, 1987
GRETAG Aktiengesellschaft
Guido Keller
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
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Patent Grant
Process and apparatus for the colorimetric analysis of printed mate...
Patent number
4,505,589
Issue date
Mar 19, 1985
GRETAG Aktiengesellschaft
Hans Ott
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS