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Harald Hofmann
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Hartenholm, DE
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last 30 patents
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Patent Grant
Pen holder device
Patent number
4,669,617
Issue date
Jun 2, 1987
Koh-I-Noor Rapidograph, Inc.
Juergen Boeckmann
B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
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Patent Grant
Technical pen holder
Patent number
4,548,325
Issue date
Oct 22, 1985
Koh-I-Noor Rapidograph, Inc.
Anke Hojer
B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES