Granted Patent
Utility
US 4,771,934 · App. 07/034,616
Food tray with lid locking mechanism
Inventor:
Danny Kalmanides
Patented Case
View Patent ↗
Granted: Sep 20, 1988
Filed: Apr 6, 1987
Inventor
Danny Kalmanides
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.