Granted Patent
Utility
US 5,279,970 · App. 07/962,695
Carbon particulate monitor with preseparator
Inventors:
Harvey Patashnick, Georg Rupprecht
Patented Case
View Patent ↗
Granted: Jan 18, 1994
Filed: Oct 19, 1992
Inventors
Harvey Patashnick
Georg Rupprecht
Assignee (at issue)
Rupprecht & Patashnick Company, 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.