Granted Patent
Utility
US 4,041,949 · App. 05/702,211
Flexible waistband diaper
Inventor:
Theodore Frederick Kozak
Patented Case
View Patent ↗
Granted: Aug 16, 1977
Filed: Jul 2, 1976
Inventor
Theodore Frederick Kozak
Assignee (at issue)
Union Carbide 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.