Granted Patent
Utility
US 4,423,962 · App. 06/365,789
Device for the disaggregation of powdery material in a reservoir
Inventor:
Joseph Knott
Patented Case
View Patent ↗
Granted: Jan 3, 1984
Filed: Apr 5, 1982
Inventor
Joseph Knott
Assignee (at issue)
Siemens Aktiengesellschaft
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.