4. Supports
  5. Stand
  6. Understructure

Douglas M. Thole

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Chair with vertically shiftable height adjustment

Supports – Stand – Understructure
Patent

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Operator-interactive adjustable workstation

Chairs and seats – With table – desk – or easel – Table pivotally connected to seat
Patent

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Tilt mechanism for chair having adjustable spring...

Chairs and seats – Back movement resiliently opposed in operating position – Back and bottom adjust in a fixed relationship
Reexamination Certificate

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Universal tilt mechanism for a chair

Chairs and seats – Back movement resiliently opposed in operating position – Back and bottom adjust in a fixed relationship
Reexamination Certificate

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Profile ID: LFUS-PAI-P-852520

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