Granted Patent
Utility
US 4,240,460 · App. 06/088,876
Means for limiting floating movement of gate valve seats
Inventor:
Ruben G. Alaniz
Patented Case
View Patent ↗
Granted: Dec 23, 1980
Filed: Oct 29, 1979
Inventor
Ruben G. Alaniz
Assignee (at issue)
ACF Industries Incorporated
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.