Granted Patent
Utility
US 4,279,534 · App. 06/054,236
Method and apparatus for applying horizontal road marking material of high optical efficiency
Inventor:
Ludwig Eigenmann
Patented Case
View Patent ↗
Granted: Jul 21, 1981
Filed: Jul 2, 1979
Inventor
Ludwig Eigenmann
Assignee (at issue)
Owens-Illinois 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.