Granted Patent
Utility
US 3,974,089 · App. 05/507,917
Process for preventing segregation of a component in a mixture of powders
Inventors:
James E. Owen, J. William Vogt
Patented Case
View Patent ↗
Granted: Aug 10, 1976
Filed: Sep 20, 1974
Inventors
James E. Owen
J. William Vogt
Assignee (at issue)
The Harshaw Chemical 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.