Granted Patent
Utility
US 4,292,744 · App. 05/962,699
Separation apparatus for a condensation-drying plant
Inventor:
Hans U. Nabholz
Patented Case
View Patent ↗
Granted: Oct 6, 1981
Filed: Nov 21, 1978
Inventor
Hans U. Nabholz
Assignee (at issue)
Micafil AG
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.