Granted Patent
Utility
US 4,174,588 · App. 05/875,187
Toy blood pressure monitoring device
Inventor:
W. Porter Clanton
Patented Case
View Patent ↗
Granted: Nov 20, 1979
Filed: Feb 6, 1978
Inventor
W. Porter Clanton
Assignee (at issue)
The Quaker Oats 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.