Granted Patent
Utility
US 4,341,214 · App. 05/812,174
Sleeve-enclosed hydrophilic foam tampon with improved after-use withdrawal characteristics
Inventors:
Donald M. Fries, David F. Ring
Patented Case
View Patent ↗
Granted: Jul 27, 1982
Filed: Jul 1, 1977
Inventors
Donald M. Fries
David F. Ring
Assignee (at issue)
Kimberly-Clark 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.