Granted Patent
Utility
US 4,925,340 · App. 07/351,379
Screed slope controller for a paver
Inventors:
Richard K. Heiser, James R. Reed
Patented Case
View Patent ↗
Granted: May 15, 1990
Filed: May 12, 1989
Inventors
Richard K. Heiser
James R. Reed
Assignee (at issue)
Sundstrand-Sauer
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.