Granted Patent
Utility
US 4,328,898 · App. 06/100,268
Frame for storing printed-circuit boards or the like
Inventor:
Francesco Grassi
Patented Case
View Patent ↗
Granted: May 11, 1982
Filed: Dec 4, 1979
Inventor
Francesco Grassi
Assignee (at issue)
Societa Italiana Telecomunicazioni Siemens S.p.A.
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.