4. Pipe joints or couplings
  5. Particular interface
  6. Annular socket

James A. Karnes

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Heating duct

Pipe joints or couplings – Particular interface – Annular socket
Reexamination Certificate

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Plastic heating duct connectors

Pipe joints or couplings – Internal sleeve
Reexamination Certificate

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Plastic heating duct connectors

Pipe joints or couplings – Internal sleeve
Reexamination Certificate

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Trunk line take-off

Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Design Patent

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Profile ID: LFUS-PAI-P-2094055

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