Granted Patent
Utility
US 4,488,341 · App. 06/408,150
Method of making a fluid pressure actuator
Inventors:
Douglas R. Scott, Frank Payne, Roscoe M. Ailor
Patented Case
View Patent ↗
Granted: Dec 18, 1984
Filed: Aug 16, 1982
Inventors
Douglas R. Scott
Frank Payne
Roscoe M. Ailor
Assignee (at issue)
ROBERTSHAW CONTROLS PRIVATE LIMITED
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.