Granted Patent
Utility
US 4,344,458 · App. 06/177,795
Accumulator device with improved bladder seal
Inventor:
Abduz Zahid
Patented Case
View Patent ↗
Granted: Aug 17, 1982
Filed: Aug 13, 1980
Inventor
Abduz Zahid
Assignee (at issue)
Greer Hydraulics, 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.