Granted Patent
Utility
US 6,571,594 · App. 10/003,025
Open back brake
Inventor:
Michael C. Clark
Patented Case
View Patent ↗
Granted: Jun 3, 2003
Filed: Nov 2, 2001
Inventor
Michael C. Clark
Assignee (at issue)
Tapco International 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.