Granted Patent
Utility
US 4,905,454 · App. 07/184,281
Method for providing containers with a controlled environment
Inventors:
John E. Sanfilippo, James J. Sanfilippo
Patented Case
View Patent ↗
Granted: Mar 6, 1990
Filed: Apr 21, 1988
Inventors
John E. Sanfilippo
James J. Sanfilippo
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.