Granted Patent
Utility
US 4,376,050 · App. 06/252,282
Surge devices for liquid-solid separators
Inventor:
Donald F. Nichols
Patented Case
View Patent ↗
Granted: Mar 8, 1983
Filed: Apr 9, 1981
Inventor
Donald F. Nichols
Assignee (at issue)
Morrison-Knudsen 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.