Granted Patent
Utility
US 4,635,898 · App. 06/821,825
Positive pullback synchro valve actuator
Inventors:
Jack D. Rollins, William P. Coppin, Thaddeus Karabin
Patented Case
View Patent ↗
Granted: Jan 13, 1987
Filed: Jan 23, 1986
Inventors
Jack D. Rollins
William P. Coppin
Thaddeus Karabin
Assignee (at issue)
Maxon, 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.