Granted Patent
Utility
US 6,772,757 · App. 10/279,816
Concentric controlled temperature profile fluid vaporizing device
Inventor:
F. Murphy Sprinkel, Jr.
Patented Case
View Patent ↗
Granted: Aug 10, 2004
Filed: Oct 25, 2002
Inventor
F. Murphy Sprinkel, Jr.
Assignee (at issue)
Chrysalis Technologies Incorporated
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.