Granted Patent
Utility
US 5,482,578 · App. 08/212,274
Diffusion coating process
Inventors:
Bernard R. Rose, John K. Willis
Patented Case
View Patent ↗
Granted: Jan 9, 1996
Filed: Mar 14, 1994
Inventors
Bernard R. Rose
John K. Willis
Assignee (at issue)
WALBAR INC
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.