Granted Patent
Utility
US 6,503,350 · App. 09/448,546
Variable burn-rate propellant
Inventors:
Joe A. Martin, Larry Welch
Patented Case
View Patent ↗
Granted: Jan 7, 2003
Filed: Nov 23, 1999
Inventors
Joe A. Martin
Larry Welch
Assignee (at issue)
TECHNOLOGY CO., 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.