4. Spring devices
  5. Elastic extension devices
  6. Tension spring

William Halopoff

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Attachment for garage door spring

Joints and connections – Axially curved or bent portion of rod is joint component – Reversely bent portion
Patent

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Sectional garage door spring container

Flexible or portable closure – partition – or panel – Plural strip – slat – or panel type – With mounting or supporting means
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Spring retainer for garage door hardware

Spring devices – Elastic extension devices – Tension spring
Patent

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Profile ID: LFUS-PAI-P-406720

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