4. Metal working
  5. Means to assemble or disassemble
  6. Puller or pusher means, contained force multiplying operator

Knut Olof Lennart Wallman

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Fan device contained in a ventilated vehicle chair

Chairs and seats – With heat exchanger or means to provide fluid or vapor... – Power source propels air for heat exchange
Patent

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Impellers for cross-flow fans

Fluid reaction surfaces (i.e. – impellers) – Perimetric blading extending axially between annular members
Patent

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Method of assembling blower rotors

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

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Method of making impellers for cross-flow fans

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

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Method of making improved lug and hole connection between sheet

Metal working – Method of mechanical manufacture – Assembling or joining
Patent

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Profile ID: LFUS-PAI-P-567759

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