Granted Patent
Utility
US 5,622,098 · App. 08/613,146
High pressure cylinder with locking end caps
Inventor:
Gregg Piper
Patented Case
View Patent ↗
Granted: Apr 22, 1997
Filed: Mar 8, 1996
Inventor
Gregg Piper
Assignee (at issue)
Amalga Composites, Inc.
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.