4. Chairs and seats
  5. Movable bottom
  6. Movable independently of back

William D. Wilder

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Apparatus and method for sorting articles

Classifying – separating – and assorting solids – Sorting special items – and certain methods and apparatus for... – Condition responsive means controls separating means
Patent

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Method and apparatus for heating a fluid stream

Heating – Processes of heating or heater operation – Of heating a fluid
Patent

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Standing aid for use with a checkout counter

Chairs and seats – Movable bottom – Movable independently of back
Patent

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Standing aid for use with a checkout counter

Chairs and seats – Movable bottom – Movable independently of back
Patent

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Profile ID: LFUS-PAI-P-42534

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