Granted Patent
Utility
US 5,503,473 · App. 08/178,659
Automatic cementing system for precisely obtaining a desired cement density
Inventors:
Michael Dearing, Robert Allen Baten, Greg L. Cedillo, Bruce A. Vicknair
Patented Case
View Patent ↗
Granted: Apr 2, 1996
Filed: Jan 7, 1994
Inventors
Michael Dearing
Robert Allen Baten
Greg L. Cedillo
Bruce A. Vicknair
Assignee (at issue)
Stewart & Stevenson Services, Inc.
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.