Granted Patent
Utility
US 4,375,865 · App. 06/325,140
Color change system for spray coating apparatus
Inventor:
Carl M. Springer
Patented Case
View Patent ↗
Granted: Mar 8, 1983
Filed: Nov 27, 1981
Inventor
Carl M. Springer
Assignee (at issue)
Binks Manufacturing Company
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.