4. F - Mech Eng,Light,Heat,Weapons
  5. 16
  6. J

William F. Ott

F - Mech Eng,Light,Heat,Weapons – 16 – J

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Method of making a rolled metal piston ring

B - Operations – Transporting – 23 – P
Patent

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Rolled metal piston ring

F - Mech Eng,Light,Heat,Weapons – 16 – J
Patent

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Slipper type apex seal for rotary piston engine

F - Mech Eng,Light,Heat,Weapons – 01 – C
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Profile ID: LFCA-PAI-P-419883

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