Granted Patent
Utility
US 6,736,157 · App. 10/088,119
Blocking device
Inventors:
Lars I. Andersson, Anders Rosengren
Patented Case
View Patent ↗
Granted: May 18, 2004
Filed: Mar 15, 2002
Inventors
Lars I. Andersson
Anders Rosengren
Assignee (at issue)
Malte Persson & Son AB
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.