Granted Patent
Utility
US 5,980,243 · App. 09/267,249
Flat flame
Inventors:
David J. Surbey, John McDonald, Tim Kirk, Rex K. Isaacs, Darton J. Zink
Patented Case
View Patent ↗
Granted: Nov 9, 1999
Filed: Mar 12, 1999
Inventors
David J. Surbey
John McDonald
Tim Kirk
Rex K. Isaacs
Darton J. Zink
Assignee (at issue)
ZEECO, 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.