Granted Patent
Utility
US 5,896,884 · App. 08/776,009
Modular valve structure
Inventor:
Gerhard Hettinger
Patented Case
View Patent ↗
Granted: Apr 27, 1999
Filed: Jan 16, 1997
Inventor
Gerhard Hettinger
Assignee (at issue)
Burkert Werke 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.