Granted Patent
Utility
US 4,384,821 · App. 06/311,250
Free floating divider wall turbine housing
Inventors:
Arthur H. Mains, Wilbur A. Spraker, Jr., Allan C. Harper
Patented Case
View Patent ↗
Granted: May 24, 1983
Filed: Oct 14, 1981
Inventors
Arthur H. Mains
Wilbur A. Spraker, Jr.
Allan C. Harper
Assignee (at issue)
Wallace Murray Corporation
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.