Granted Patent
Utility
US 5,704,588 · App. 08/709,039
Disk-type cutoff and flow control valve
Inventors:
Harald Korfgen, Werner Gnauert
Patented Case
View Patent ↗
Granted: Jan 6, 1998
Filed: Sep 6, 1996
Inventors
Harald Korfgen
Werner Gnauert
Assignee (at issue)
Friedrich Grohe AG
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.