Granted Patent
Utility
US 4,583,923 · App. 06/579,044
Bellows latching mechanism for a submersible pump
Inventor:
Mark James
Patented Case
View Patent ↗
Granted: Apr 22, 1986
Filed: Feb 10, 1984
Inventor
Mark James
Assignee (at issue)
Hughes Tool Company LLC
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.