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Hachiro Doi

AH Ahresty: 4 patents #2 of 40Top 5%
FC Fuso Keigokin Co.: 4 patents #1 of 3Top 35%
Overall (All Time): #669,649 of 4,157,543Top 20%
8
Patents All Time

Issued Patents All Time

Showing 1–8 of 8 patents

Patent #TitleCo-InventorsDate
5331795 Mowing cutter unit for mower 1994-07-26
5014765 Heat retaining method for molten metal supplied into injection sleeve, method of applying heat insulating powder onto an inner surface of the injection sleeve, and device therefor Shunzo Aoyama, Kunio Yoshida, Katsumi Sakamoto 1991-05-14
4999985 Mowing blade unit 1991-03-19
4890448 Mowing blade unit 1990-01-02
4706446 Lawn mower Masayuki Yaegashi 1987-11-17
4520619 Lawn mower Masayuki Yaegashi 1985-06-04
4322934 Lawn mower 1982-04-06
4262475 Method and apparatus for collecting grass clippings Katsuhiko Takahashi, Masayuki Yaegashi 1981-04-21