Granted Patent
Utility
US 6,503,244 · App. 09/801,480
High pressure injection system
Inventor:
Douglas Ray Hayman
Patented Case
View Patent ↗
Granted: Jan 7, 2003
Filed: Mar 7, 2001
Inventor
Douglas Ray Hayman
Assignee (at issue)
Micro Therapeutics
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.