Granted Patent
Utility
US 4,299,640 · App. 06/172,322
Rubber-brass adhesion improved through treatment of the metal with amino carboxylic acid or salt thereof
Inventor:
David E. Erickson
Patented Case
View Patent ↗
Granted: Nov 10, 1981
Filed: Jul 25, 1980
Inventor
David E. Erickson
Assignee (at issue)
The General Tire & Rubber Company
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.