Inventor
BISCHOFF ENNO
DE4 patents
Patents
4 patentsUS5671146ASep 23, 1997
Method for improving the security of postage meter machines
FRANCOTYP POSTALIA GMBH71 citations94
US6587843B1Jul 1, 2003
Method for improving the security of postage meter machines in the transfer of credit
FRANCOTYP POSTALIA GMBH38 citations92
US5729460AMar 17, 1998
Method for payment of the recrediting of an electronic postage meter and arrangement for the operation of a data central
FRANCOTYP POSTALIA GMBH91 citations91
US5805711ASep 8, 1998
Method of improving the security of postage meter machines
FRANCOTYP POSTALIA GMBH56 citations90