4. Electrical generator or motor structure
  5. Dynamoelectric
  6. Rotary

Roland Doll

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Engine front cover

Internal-combustion engines – Frame construction – Horizontal cylinder
Patent

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Liquid cooled generator

Electrical generator or motor structure – Dynamoelectric – Rotary
Patent

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Multi-stage oil pumping station

Power plants – Pressure fluid source and motor – Having plural energy input means – pumps or diverse pump outlets
Reexamination Certificate

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Profile ID: LFUS-PAI-P-587682

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