Granted Patent
Utility
US 6,000,198 · App. 09/056,406
Method and package for packaging contents at reduced pressures
Inventor:
Walter G. Tramposch
Patented Case
View Patent ↗
Granted: Dec 14, 1999
Filed: Apr 7, 1998
Inventor
Walter G. Tramposch
Assignee (at issue)
CALGON CARBON 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.