Granted Patent
Utility
US 4,765,257 · App. 07/127,785
Apparatus and method for waste disposal
Inventors:
Ramin Abrishamian, Richard P. de Filippi
Patented Case
View Patent ↗
Granted: Aug 23, 1988
Filed: Dec 2, 1987
Inventors
Ramin Abrishamian
Richard P. de Filippi
Assignee (at issue)
CF Systems 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.