Patent classifications
B
PERFORMING OPERATIONS; TRANSPORTING
Load children
B43
WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
Load children
B43K
IMPLEMENTS FOR WRITING OR DRAWING
Load children
23/00
Holders or connectors for writing implements; Means for protecting the writing-points
Load children Filter patents View analytics View as hierarchy
B43K23/08
Protecting means, e.g. caps
Load children Filter patents View analytics View as hierarchy