Granted Patent
Utility
US 4,184,572 · App. 05/900,551
Device for temporarily rigidly uniting a free circular element with a fixed circular element
Inventor:
Pierre Poubeau
Patented Case
View Patent ↗
Granted: Jan 22, 1980
Filed: Apr 27, 1978
Inventor
Pierre Poubeau
Assignee (at issue)
Societe Nationale Industrielle et Aerospatiale
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.