Granted Patent
Utility
US 5,098,524 · App. 07/627,560
Coke drum unheading device
Inventors:
Leslie P. Antalfy, Marcus R. Reaves, Donnie Wayne Alexander
Patented Case
View Patent ↗
Granted: Mar 24, 1992
Filed: Dec 10, 1990
Inventors
Leslie P. Antalfy
Marcus R. Reaves
Donnie Wayne Alexander
Assignee (at issue)
Flour 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.