Granted Patent
Utility
US 6,035,591 · App. 09/220,486
Method and apparatus for providing concrete products having improved surface and structural characteristics
Inventors:
James Hicks, John O. Winchester, Richard R. Nicholson
Patented Case
View Patent ↗
Granted: Mar 14, 2000
Filed: Dec 23, 1998
Inventors
James Hicks
John O. Winchester
Richard R. Nicholson
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.