Granted Patent
Utility
US 4,928,511 · App. 07/283,678
Rotary cup infeed
Inventor:
Enn Sirvet
Patented Case
View Patent ↗
Granted: May 29, 1990
Filed: Dec 13, 1988
Inventor
Enn Sirvet
Assignee (at issue)
Sequa 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.