Granted Patent
Utility
US 5,340,273 · App. 08/101,940
Sealing and pumping means and methods environmentally leak-proof pump with misting chamber defined therein
Inventor:
Robert E. Rockwood
Patented Case
View Patent ↗
Granted: Aug 23, 1994
Filed: Aug 4, 1993
Inventor
Robert E. Rockwood
Assignee (at issue)
Environamics 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.