Granted Patent
Utility
US 4,236,950 · App. 05/845,834
Road marking machine and method
Inventor:
Ludwig Eigenmann
Patented Case
View Patent ↗
Granted: Dec 2, 1980
Filed: Oct 26, 1977
Inventor
Ludwig Eigenmann
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.