Granted Patent
Utility
US 4,456,396 · App. 06/337,233
Coupling and method of assembly and disassembly
Inventor:
Leonard P. Damratowski
Patented Case
View Patent ↗
Granted: Jun 26, 1984
Filed: Jan 6, 1982
Inventor
Leonard P. Damratowski
Assignee (at issue)
Elliott Turbomachinery Co., 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.