Granted Patent
Utility
US 4,845,014 · App. 06/789,462
Method of forming a channel
Inventor:
Ivan Ladany
Patented Case
View Patent ↗
Granted: Jul 4, 1989
Filed: Oct 21, 1985
Inventor
Ivan Ladany
Assignee (at issue)
RCA 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.