Granted Patent
Utility
US 4,844,857 · App. 06/371,126
Pressurized water reactors
Inventor:
Hermann-Josef Conrads
Patented Case
View Patent ↗
Granted: Jul 4, 1989
Filed: Apr 23, 1982
Inventor
Hermann-Josef Conrads
Assignee (at issue)
Kraftwerk Union Aktiengesellschaft
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.