Granted Patent
Utility
US 5,558,882 · App. 08/327,017
Pipe paver finishing machine
Inventor:
Ewald R. Ulmer
Patented Case
View Patent ↗
Granted: Sep 24, 1996
Filed: Oct 21, 1994
Inventor
Ewald R. Ulmer
Assignee (at issue)
CMI LIMITED CO.
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.