Granted Patent
Utility
US 5,384,640 · App. 08/005,759
Gas sample chamber for use with a source of coherent radiation
Inventor:
Jacob Y. Wong
Patented Case
View Patent ↗
Granted: Jan 24, 1995
Filed: Jan 19, 1993
Inventor
Jacob Y. Wong
Assignee (at issue)
Gaztech International 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.