Granted Patent
Utility
US 4,576,330 · App. 06/710,398
Food tray with lockable lid
Inventor:
Frank Schepp
Patented Case
View Patent ↗
Granted: Mar 18, 1986
Filed: Mar 11, 1985
Inventor
Frank Schepp
Assignee (at issue)
Inline Plastics Corp.
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.