Granted Patent
Utility
US 5,725,786 · App. 08/560,184
Durable mask and method of fabrication
Inventor:
Burhan Bayraktaroglu
Patented Case
View Patent ↗
Granted: Mar 10, 1998
Filed: Nov 20, 1995
Inventor
Burhan Bayraktaroglu
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.