Granted Patent
Utility
US 5,699,561 · App. 08/673,256
Self-contained bicycle helmet and molding process therefor
Inventor:
Lester Broersma
Patented Case
View Patent ↗
Granted: Dec 23, 1997
Filed: Jun 28, 1996
Inventor
Lester Broersma
Assignee (at issue)
Troxel West
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.