Assignee
STAEDTLER J S KG
DE·4 granted patents·47 citations·filing 1981–1983
Top patents by PatentIndex Score
4 records- 0162US4380403AClosure cap for a writing instrumentSTAEDTLER J S KG·Filed 1981·Granted Apr 19, 1983·24 cites·9 claims
- 0255US4538934AAutomatic lead advancing mechanism for a mechanical pencilSTAEDTLER J S KG·Filed 1983·Granted Sep 3, 1985·18 cites·18 claims
- 0327US4392147AApparatus for supplying and regulating a writing medium to the writing unit of a writing or drawing machineSTAEDTLER J S KG·Filed 1981·Granted Jul 5, 1983·4 cites·14 claims
- 0424US4423429AWriting medium unit for writing or drawing machinesSTAEDTLER J S KG·Filed 1981·Granted Dec 27, 1983·1 cites·9 claims
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