Patents/Inventors

Hidehei Kageyama

SaitamaJP3 patents

4 Patents

USD10570172025
Refill for a Ball-point Pencil
0 cites
US120907772024
Writing Instrument Refills and Writing Instrument
KOTOBUKI & CO., Ltd.
0 cites
USD10107332024
Mechanical Pencil
MITSUBISHI PENCIL COMPANY, Ltd.
0 cites
USD09980382023
Writing Instrument
MITSUBISHI PENCIL COMPANY, Ltd.
0 cites