Granted Patent
Utility
US 5,222,530 · App. 07/684,597
Hygienic cap and liquid dispensing system
Inventors:
Henry E. Baker, John B. Baker, David H. Baker, Peter K. Baker, Edward H. Donselman, Ronald C. Katz
Patented Case
View Patent ↗
Granted: Jun 29, 1993
Filed: Apr 12, 1991
Inventors
Henry E. Baker
John B. Baker
David H. Baker
Peter K. Baker
Edward H. Donselman
Ronald C. Katz
Assignee (at issue)
ELKAY MANUFACTURING 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.