Granted Patent
Utility
US 5,970,781 · App. 09/078,909
In-stack direct particulate mass measurement apparatus and method
Inventors:
John Hiss, III, Harvey Patashnick
Patented Case
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Granted: Oct 26, 1999
Filed: May 14, 1998
Inventors
John Hiss, III
Harvey Patashnick
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.