Granted Patent
Utility
US 5,839,657 · App. 08/780,852
Method and structure for creating terrain grade for artificial landscapes
Inventors:
C. Dwayne Fulton, David L. Osment
Patented Case
View Patent ↗
Granted: Nov 24, 1998
Filed: Jan 9, 1997
Inventors
C. Dwayne Fulton
David L. Osment
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.