Granted Patent
Utility
US 4,928,989 · App. 07/279,682
Ski having a core comprising angled profiles
Inventors:
Bernhard Mayr, Heinz Lampl
Patented Case
View Patent ↗
Granted: May 29, 1990
Filed: Dec 5, 1988
Inventors
Bernhard Mayr
Heinz Lampl
Assignee (at issue)
Head Sportgerate Gesellschaft m.b.H. & Co. OHG
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.