Granted Patent
Utility
US 5,549,422 · App. 08/418,813
Automatic water flushing method for a hydrator
Inventor:
James M. Shepard
Patented Case
View Patent ↗
Granted: Aug 27, 1996
Filed: Apr 7, 1995
Inventor
James M. Shepard
Assignee (at issue)
General Chemical Company
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.