Patents/Inventors

Takumi Kajiwara

Tokyo-toJP2 patents

2 Patents

US119930972024
Mechanical Pencil
KABUSHIKI KAISHA PILOT CORPORATION
0 cites
US119755602024
Ballpoint Pen Tip, Ballpoint Pen Refill, and Ballpoint Pen
KABUSHIKI KAISHA PILOT CORPORATION
0 cites