Granted Patent
Utility
US 6,130,359 · App. 09/154,289
Liquid vacuum pump seal to reduce contamination in bisphenol-A
Inventor:
Gaylord M. Kissinger
Patented Case
View Patent ↗
Granted: Oct 10, 2000
Filed: Sep 16, 1998
Inventor
Gaylord M. Kissinger
Assignee (at issue)
General Electric Company
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.