Granted Patent
Utility
US 4,241,486 · App. 06/034,264
Methods of making a reversing valve construction and a valve member therefor
Inventor:
Werner Bauer
Patented Case
View Patent ↗
Granted: Dec 30, 1980
Filed: Apr 30, 1979
Inventor
Werner Bauer
Assignee (at issue)
ROBERTSHAW CONTROLS PRIVATE LIMITED
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.