Granted Patent
Utility
US 4,824,747 · App. 06/789,749
Method of forming a variable width channel
Inventor:
James T. Andrews
Patented Case
View Patent ↗
Granted: Apr 25, 1989
Filed: Oct 21, 1985
Inventor
James T. Andrews
Assignee (at issue)
General Electric 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.