Inventor

SHIMOISHI TETSUO

JP4 patents

Patents

4 patents

US4795286AJan 3, 1989

Pen tip structure

TEIBOW CO LTD10 citations72

US5238320AAug 24, 1993

Pen nib of a writing instrument

TEIBOW CO LTD8 citations71

US4362683ADec 7, 1982

Apparatus and method for producing a continuous nib rod for a writing instrument

TEIBOW CO LTD14 citations71

US4207013AJun 10, 1980

Writing instrument

TEIBOW CO LTD5 citations57