4. Heat exchange
  5. With repair or assembly means

Donald J. Frost

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Heat exchanger

Heat exchange – Movable heating or cooling surface – Rotary drum
Patent

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Heat exchanger with back to back turbulators and flow directing

Heat exchange – With repair or assembly means
Patent

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Method of making a heat exchanger and the heat exchanger

Metal working – Means to assemble or disassemble – Puller or pusher means – contained force multiplying operator
Patent

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Method of stabilizing organic waste

Liquid purification or separation – Processes – Chemical treatment
Patent

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Model railroad rerailer

Railways – Car replacer – Two-way
Reexamination Certificate

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Profile ID: LFUS-PAI-P-1176868

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