Granted Patent
Utility
US 5,642,441 · App. 08/547,653
Separation apparatus and method for measuring focal plane
Inventors:
James K. Riley, Keith L. Frost, William C. Lindow, Kim Hansen, Tuan Phan, James Stephanick
Patented Case
View Patent ↗
Granted: Jun 24, 1997
Filed: Oct 24, 1995
Inventors
James K. Riley
Keith L. Frost
William C. Lindow
Kim Hansen
Tuan Phan
James Stephanick
Assignee (at issue)
Neopath, Inc.
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.