Granted Patent
Utility
US 4,154,284 · App. 05/826,798
Method for producing flake
Inventor:
Robert E. Maringer
Patented Case
View Patent ↗
Granted: May 15, 1979
Filed: Aug 22, 1977
Inventor
Robert E. Maringer
Assignee (at issue)
Battelle Development 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.