Granted Patent
Utility
US 6,152,492 · App. 09/078,994
Liquid storage tank trailer
Inventors:
Gary R. Markham, Edgar Wolf
Patented Case
View Patent ↗
Granted: Nov 28, 2000
Filed: May 14, 1998
Inventors
Gary R. Markham
Edgar Wolf
Assignee (at issue)
THE MODERN GROUP, LTD.
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.