Granted Patent
Utility
US 4,088,528 · App. 05/709,193
Method and apparatus for grinding chips into paper pulp
Inventors:
Pierre Berger, Christian de Choudens, Gerard Lombardo, Pierre Monzie
Patented Case
View Patent ↗
Granted: May 9, 1978
Filed: Jul 27, 1976
Inventors
Pierre Berger
Christian de Choudens
Gerard Lombardo
Pierre Monzie
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.