4. Metal working
  5. Method of mechanical manufacture
  6. Assembling or joining

Perfection Spring & Stamping Corp.

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Adjustable lumbar support for seat backs

Chairs and seats – Bottom or back with means to alter contour – Providing support for lower back region
Patent

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Internal nut for adjusting the tension of a coil spring

Spring devices – Vehicle – Comprising compressible fluid
Patent

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Method of making internal nut for adjusting the tension of a coi

Patent

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Multiple-strand torsion spring

Spring devices – Coil – Plural – one within another
Patent

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Multiple-strand torsion spring and method of forming the same

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

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Profile ID: LFUS-PAI-P-322674

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