Granted Patent
Utility
US 6,070,914 · App. 09/314,453
Pipe coupling
Inventor:
Frank Schmidt
Patented Case
View Patent ↗
Granted: Jun 6, 2000
Filed: May 18, 1999
Inventor
Frank Schmidt
Assignee (at issue)
Rasmussen GmbH
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.