Granted Patent
Utility
US 5,180,576 · App. 07/753,340
Anticalculus dentifrices
Inventors:
Anthony E. Winston, Regina M. Miskewitz, Darlene R. Walley, John R. Berschied
Patented Case
View Patent ↗
Granted: Jan 19, 1993
Filed: Aug 30, 1991
Inventors
Anthony E. Winston
Regina M. Miskewitz
Darlene R. Walley
John R. Berschied
Assignee (at issue)
Church & Dwight Co., 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.