Granted Patent
Utility
US 4,125,375 · App. 05/740,485
Separation of solid and liquid components of mixtures
Inventor:
William M. Hunter
Patented Case
View Patent ↗
Granted: Nov 14, 1978
Filed: Nov 10, 1976
Inventor
William M. Hunter
Assignee (at issue)
NATIONAL RESEARCH DEVELOPMENT 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.