Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB27089/27A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GURO SCHREIBSTIFT GmbH
Original Assignee
GURO SCHREIBSTIFT GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by GURO SCHREIBSTIFT GmbHfiledCriticalGURO SCHREIBSTIFT GmbH
Publication of GB279090ApublicationCriticalpatent/GB279090A/en
279,090. Guroschreibstift Ges., (Assignees of Rosenbaum, E., and Gundlich, J. W.). Oct. 12, 1926, [Convention date]. Leads.-Pencil leads are made from an alloy of zinc and bismuth, preferably containing only traces of bismuth.
GB27089/27A1926-10-121927-10-12Process for the production of pencil leads from a metal alloy
ExpiredGB279090A
(en)