Granted Patent
Utility
US 5,402,264 · App. 08/098,646
Cleaning apparatus for light tube in an optical inspection system
Inventors:
John H. Wilbur, Calvin G. Gray
Patented Case
View Patent ↗
Granted: Mar 28, 1995
Filed: Jul 28, 1993
Inventors
John H. Wilbur
Calvin G. Gray
Assignee (at issue)
Simco/Ramic 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.