Granted Patent
Utility
US 4,712,784 · App. 06/739,918
Adjustable vacuum pad
Inventor:
Ross M. Carrell
Patented Case
View Patent ↗
Granted: Dec 15, 1987
Filed: May 31, 1985
Inventor
Ross M. Carrell
Assignee (at issue)
RCA Corporation
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.