Granted Patent
Utility
US 4,570,977 · App. 06/505,208
Mechanical connector apparatus
Inventors:
James A. Burton, Richard B. Lee
Patented Case
View Patent ↗
Granted: Feb 18, 1986
Filed: Jun 17, 1983
Inventors
James A. Burton
Richard B. Lee
Assignee (at issue)
Hydril 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.