Granted Patent
Utility
US 6,635,862 · App. 09/912,169
Mixed architecture light curtain system
Inventors:
Boris Shteynberg, James A. Ashford
Patented Case
View Patent ↗
Granted: Oct 21, 2003
Filed: Jul 24, 2001
Inventors
Boris Shteynberg
James A. Ashford
Assignee (at issue)
Scientific Technologies 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.