4. Spring devices
  5. Fluid
  6. Expansible-contractible chamber device

Henry J. Kelm

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Cushion and cushion cylinder for ram or bolster of a press

Spring devices – Fluid – Expansible-contractible chamber device
Reexamination Certificate

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Low contact force spring

Metal deforming – By use of closed-die and coacting work-forcer – Cup or shell drawing
Reexamination Certificate

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Low contact force spring

Spring devices – Fluid – Expansible-contractible chamber device
Reexamination Certificate

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Press assembly

Metal deforming – By use of closed-die and coacting work-forcer – Cup or shell drawing
Patent

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Self-lubricating fluid cylinder

Spring devices – Fluid – Expansible-contractible chamber device
Patent

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Profile ID: LFUS-PAI-P-1608627

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