Hisayoshi Masaki

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Kawage, JP

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Patents Grantslast 30 patents

Information Patent Grant
Gas pressure adjusting device in gas-operated auto-loading firearm
- Patent number 4,702,146
- Issue date Oct 27, 1987
- Howa Kogyo Kabushiki Kaisha
- Kouhei Ikeda
- F41 - WEAPONS