Inventor
LEIDNER JACOB
CA14 patents
⚠️ This page may combine multiple inventors who share the name “LEIDNER JACOB”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
BINNEY & SMITH INC
5 patentsUS6271286B1Aug 7, 2001
Erasable colored pencil lead
BINNEY & SMITH INC16 citations92
US6441091B1Aug 27, 2002
Eraser
BINNEY & SMITH INC16 citations82
US6815471B2Nov 9, 2004
Erasable colored pencil lead
BINNEY & SMITH INC5 citations73
US6262143B1Jul 17, 2001
Erasable colored pencil lead
BINNEY & SMITH INC6 citations73
US6011084AJan 4, 2000
Erasable colored pencil lead
BINNEY & SMITH INC10 citations73