Granted Patent
Utility
US 4,749,347 · App. 06/921,124
Topology fabrication apparatus
Inventor:
Viljo K. Valavaara
Patented Case
View Patent ↗
Granted: Jun 7, 1988
Filed: Oct 21, 1986
Inventor
Viljo K. Valavaara
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.