Granted Patent
Utility
US 6,814,658 · App. 10/617,432
Automatic sash return for work chamber
Inventors:
Kurt P. Rindoks, Rudolph Poblete
Patented Case
View Patent ↗
Granted: Nov 9, 2004
Filed: Jul 11, 2003
Inventors
Kurt P. Rindoks
Rudolph Poblete
Assignee (at issue)
Kewaunee Scientific 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.