Granted Patent
Utility
US 4,344,287 · App. 06/182,293
Volume compensation for hydraulic circuits
Inventor:
Ernest C. Sindelar
Patented Case
View Patent ↗
Granted: Aug 17, 1982
Filed: Aug 28, 1980
Inventor
Ernest C. Sindelar
Assignee (at issue)
Caterpillar Tractor Co.
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.