4. Friction gear transmission systems or components
  5. Forward and reverse
  6. Variable speed in forward or reverse

Harold F. Dougherty

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Method and apparatus for drying grain

Drying and gas or vapor contact with solids – Apparatus – With means to treat gas or vapor
Patent

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Variable speed power transmission mechanism

Friction gear transmission systems or components – Forward and reverse – Variable speed in forward or reverse
Patent

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Profile ID: LFUS-PAI-P-1703516

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