Granted Patent
Utility
US 4,340,129 · App. 06/145,422
Acoustical laminate construction and attenuated systems comprising same
Inventor:
Edward Francis Salyers
Patented Case
View Patent ↗
Granted: Jul 20, 1982
Filed: May 1, 1980
Inventor
Edward Francis Salyers
Assignee (at issue)
Cabot Corporation
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.