4. Chairs and seats
  5. Back movement resiliently opposed in operating position
  6. Back and seat adjust simultaneously

Johann Burkhard Schmitz

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Back for a seating structure

Design Patent

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Back support structure

Chairs and seats – Bottom or back – Contoured back
Reexamination Certificate

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Back support structure

Chairs and seats – Having detachably interfitting parts or components; i.e.,... – Interfitted back and back frame
Reexamination Certificate

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Body support structure

Chairs and seats – Back movement resiliently opposed in operating position – Back and seat adjust simultaneously
Reexamination Certificate

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Body support structure

Design Patent

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Profile ID: LFUS-PAI-P-2202443

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