Granted Patent
Utility
US 5,885,290 · App. 08/820,612
Intra-oral bone distraction device
Inventors:
Cesar Guerrero, William H. Bell
Patented Case
View Patent ↗
Granted: Mar 23, 1999
Filed: Mar 19, 1997
Inventors
Cesar Guerrero
William H. Bell
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.