Inventor
WILLIMCZIK BERND
DE3 patents
Patents
3 patentsUS4496958AJan 29, 1985
Drawing pen exchanger for computer controlled drawing machines
KOH I NOOR RAPIDOGRAPH19 citations76
US4552483ANov 12, 1985
Device for covering an oblong opening in a housing
KOH I NOOR RAPIDOGRAPH5 citations59
US4489333ADec 18, 1984
Device for exchanging objects in particular writing instruments
KOH I NOOR RAPIDOGRAPH5 citations57