Granted Patent
Utility
US 4,428,488 · App. 06/295,337
Device for supporting sponge collection bags
Inventors:
James D. McAvinn, Felipe S. Li
Patented Case
View Patent ↗
Granted: Jan 31, 1984
Filed: Aug 24, 1981
Inventors
James D. McAvinn
Felipe S. Li
Assignee (at issue)
The Kendall Company LP
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.