Granted Patent
Utility
US 4,378,937 · App. 06/148,416
Pipe aligning tool
Inventor:
Timothy C. Dearman
Patented Case
View Patent ↗
Granted: Apr 5, 1983
Filed: May 9, 1980
Inventor
Timothy C. Dearman
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.