Granted Patent
Utility
US 4,042,123 · App. 05/547,375
Automated pipe handling system
Inventors:
Loren B. Sheldon, James R. Tomashek, Robert R. Kelly, James S. Thale, Jashwant C. Shah, Donald H. Ward
Patented Case
View Patent ↗
Granted: Aug 16, 1977
Filed: Feb 6, 1975
Inventors
Loren B. Sheldon
James R. Tomashek
Robert R. Kelly
James S. Thale
Jashwant C. Shah
Donald H. Ward
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.