Granted Patent
Utility
US 5,271,450 · App. 07/838,740
Thermal reclamation method
Inventor:
Ian Bailey
Patented Case
View Patent ↗
Granted: Dec 21, 1993
Filed: Mar 10, 1992
Inventor
Ian Bailey
Assignee (at issue)
Richards Engineering
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.