Granted Patent
Utility
US 4,706,830 · App. 06/390,412
Vacuum bottle with pressure indicator
Inventor:
Mark WAREING
Patented Case
View Patent ↗
Granted: Nov 17, 1987
Filed: Jun 21, 1982
Inventor
Mark WAREING
Assignee (at issue)
Johnson & Johnson Products, Inc.
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.