Granted Patent
Utility
US 4,607,930 · App. 06/688,500
Device for transferring the film holders in a film developer
Inventor:
Silvano Castellarin
Patented Case
View Patent ↗
Granted: Aug 26, 1986
Filed: Jan 3, 1985
Inventor
Silvano Castellarin
Assignee (at issue)
Gretag San Marco 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.