Granted Patent
Utility
US 6,389,690 · App. 09/294,252
Method of coating printed circuit board
Inventors:
Randy L. McCullough, John Lee Wayt, James N. Butch
Patented Case
View Patent ↗
Granted: May 21, 2002
Filed: Apr 19, 1999
Inventors
Randy L. McCullough
John Lee Wayt
James N. Butch
Assignee (at issue)
American Meter 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.