Granted Patent
Utility
US 4,279,285 · App. 06/101,926
Apparatus and method for forming a tube article on a core
Inventor:
Charles E. Grawey
Patented Case
View Patent ↗
Granted: Jul 21, 1981
Filed: Dec 10, 1979
Inventor
Charles E. Grawey
Assignee (at issue)
Caterpillar Tractor Co.
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.