Granted Patent
Utility
US 4,680,437 · App. 06/818,011
Adjustable float assembly for pumps
Inventors:
Nyle D. La Grange, Darryl M. Nielsen, Joe A. Harbison
Patented Case
View Patent ↗
Granted: Jul 14, 1987
Filed: Jan 13, 1986
Inventors
Nyle D. La Grange
Darryl M. Nielsen
Joe A. Harbison
Assignee (at issue)
The Marley-Wylain 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.