Granted Patent
Utility
US 4,356,487 · App. 06/164,543
Sounding apparatus
Inventor:
Louis Herbreteau
Patented Case
View Patent ↗
Granted: Oct 26, 1982
Filed: Jul 2, 1980
Inventor
Louis Herbreteau
Assignee (at issue)
Commissariat à l'Energie Atomique et aux Energies Alternatives
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.