Granted Patent
Utility
US 4,504,441 · App. 06/519,516
Method of preventing segregation of metal powders
Inventor:
Geoffrey S. Kuyper
Patented Case
View Patent ↗
Granted: Mar 12, 1985
Filed: Aug 1, 1983
Inventor
Geoffrey S. Kuyper
Assignee (at issue)
AMSTED INDUSTRIES INCORPORATED
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.