4. Pipe joints or couplings
  5. Flange

Robert Issagholian-Havai

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Angle plate fastening method and apparatus for air duct...

Pipe joints or couplings – Flange
Reexamination Certificate

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Apparatus for connecting oval duct sections

Pipe joints or couplings – Particular interface – Annular socket
Patent

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Flange connector for air duct with detent adjacent sealing mater

Pipe joints or couplings – Flange
Patent

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Interactive sealing system for arcuate ducts including seal...

Pipe joints or couplings – Packed – Socket
Reexamination Certificate

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Method and apparatus for fabricating arcuate sheet metal...

Metal working – Method of mechanical manufacture – Assembling or joining
Reexamination Certificate

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Profile ID: LFUS-PAI-P-806499

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