Granted Patent
Utility
US 6,649,129 · App. 08/868,875
Method and apparatus for concentrating a VOC sample
Inventor:
David Neal
Patented Case
View Patent ↗
Granted: Nov 18, 2003
Filed: Jun 4, 1997
Inventor
David Neal
Assignee (at issue)
Teledyne Tekmar Company
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.