Granted Patent
Utility
US 4,329,052 · App. 06/024,770
Method and apparatus for the measurement of cell size in a foam structure
Inventors:
Edward A. Colombo, James Tsai
Patented Case
View Patent ↗
Granted: May 11, 1982
Filed: Mar 28, 1979
Inventors
Edward A. Colombo
James Tsai
Assignee (at issue)
Mobil Oil 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.