Granted Patent
Utility
US 5,896,883 · App. 08/594,860
Portable liquid mud plant
Inventors:
Bijan Khalatbari, Charles Arnold Gaertner
Patented Case
View Patent ↗
Granted: Apr 27, 1999
Filed: Jan 31, 1996
Inventors
Bijan Khalatbari
Charles Arnold Gaertner
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.