4. Electric heating
  5. Metal heating
  6. By arc

Robert D. Kampfer

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Apparatus and method for making a mechanical fastener

Plastic and nonmetallic article shaping or treating: processes – Direct application of electrical or wave energy to work – Reshaping – drawing or stretching
Reexamination Certificate

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Bundling strap

Bleaching and dyeing; fluid treatment and chemical modification – Treatment of hides – skins – feathers and animal tissues – Tanning
Design Patent

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Coextruded mechanical fastener constructions

Stock material or miscellaneous articles – Structurally defined web or sheet – Including sheet or component perpendicular to plane of web...
Patent

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Elastic fastener

Stock material or miscellaneous articles – Structurally defined web or sheet – Including fastener for attaching to external surface
Reexamination Certificate

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Laser perforation of paper

Record receiver having plural interactive leaves or a colorless – Having a colorless color-former – developer therefor – or... – Method of use – kit – or combined with marking instrument or...
Patent

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Profile ID: LFUS-PAI-P-235263

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