Granted Patent
Utility
US 4,403,888 · App. 06/249,862
Oil containment booms
Inventor:
Raymond G. Teasdale
Patented Case
View Patent ↗
Granted: Sep 13, 1983
Filed: Apr 1, 1981
Inventor
Raymond G. Teasdale
Assignee (at issue)
NATIONAL RESEARCH DEVELOPMENT 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.