Granted Patent
Utility
US 5,044,774 · App. 07/599,268
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Inventors:
Edward M. Bullard, Stephen K. Guerrera, Fox J. Herrington, Ivy Wolpin
Patented Case
View Patent ↗
Granted: Sep 3, 1991
Filed: Oct 16, 1990
Inventors
Edward M. Bullard
Stephen K. Guerrera
Fox J. Herrington
Ivy Wolpin
Assignee (at issue)
Mobil Oil 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.