Granted Patent
Utility
US 4,436,047 · App. 06/375,254
Boom for sailboards
Inventor:
Leonardo Freyrie
Patented Case
View Patent ↗
Granted: Mar 13, 1984
Filed: May 5, 1982
Inventor
Leonardo Freyrie
Assignee (at issue)
AMF GmbH
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.