IP Library › Granted Patent US 6,399,002
Granted Patent Utility
US 6,399,002 · App. 09/197,435

Method of making a pipe with coupling conforming to pipe diameter

Inventors: Manfred A. A. Lupke, Stefan A. Lupke
Patented Case View Patent ↗
Granted: Jun 4, 2002 Filed: Nov 23, 1998
Inventors
Manfred A. A. Lupke
Stefan A. Lupke

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Quick Facts
Patent No.
US 6,399,002
App. No.
09/197,435
Filed
1998-11-23
Granted
2002-06-04
Kind
B1