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Steel spring with dwell for chairs

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

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Steel wire chair with springs

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

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Suspension mechanism for connecting chair backs and seats to a p

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

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Tilt control mechanism for a chair

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

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Tilt control mechanism for chairs

Chairs and seats – Back movement resiliently opposed in operating position – Back and bottom adjust in a fixed relationship
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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Tilt mechanism, particularly for knee-tilt chair

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

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Tilting seat 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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Torque control mechanism for chairs

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

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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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Work chair comprising a swivelling seat shell

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

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