Granted Patent
Utility
US 4,880,108 · App. 07/323,067
Tubular carrier pin
Inventor:
Robert G. Burk
Patented Case
View Patent ↗
Granted: Nov 14, 1989
Filed: Mar 13, 1989
Inventor
Robert G. Burk
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.