F - Mech Eng,Light,Heat,Weapons – 16 – L
Patent
F - Mech Eng,Light,Heat,Weapons
16
L
285/63
F16L 25/00 (2006.01) F16L 15/04 (2006.01) F16L 15/06 (2006.01) E21B 17/042 (2006.01)
Patent
CA 970411
Fujioka Yasuhide
Inagaki Mitami
Ryujin Takeshi
Yoshida Shuji
Kainan Steel Tube Co.
Sumitomo Metal Industries Ltd.
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