Granted Patent
Utility
US 5,143,602 · App. 07/618,165
Apparatus for the separation of solids from fluids or sediments from emulsions
Inventor:
Ralf F. Piepho
Patented Case
View Patent ↗
Granted: Sep 1, 1992
Filed: Nov 26, 1990
Inventor
Ralf F. Piepho
Assignee (at issue)
Ralf F. Piepho Abwassertechnick GmbH
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.