Granted Patent
Utility
US 6,122,825 · App. 09/195,394
Method of constructing a sampler having barriers and passages
Inventor:
Donald P. Mayeaux
Patented Case
View Patent ↗
Granted: Sep 26, 2000
Filed: Nov 18, 1998
Inventor
Donald P. Mayeaux
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.