Granted Patent
Utility
US 5,889,591 · App. 08/733,705
Interferometric measurement of toric surfaces at grazing incidence
Inventor:
John H. Bruning
Patented Case
View Patent ↗
Granted: Mar 30, 1999
Filed: Oct 17, 1996
Inventor
John H. Bruning
Assignee (at issue)
Tropel Corporation
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.