Granted Patent
Utility
US 5,794,397 · App. 08/756,228
Clean room ceiling structure light fixture wireway
Inventor:
Craig S. Ludwig
Patented Case
View Patent ↗
Granted: Aug 18, 1998
Filed: Nov 25, 1996
Inventor
Craig S. Ludwig
Assignee (at issue)
Cleanpak International
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.