Granted Patent
Utility
US 4,507,197 · App. 06/406,424
Apparatus and method for producing shot-free mineral wool
Inventors:
Alan R. Koenig, Edward L. Moon
Patented Case
View Patent ↗
Granted: Mar 26, 1985
Filed: Aug 9, 1982
Inventors
Alan R. Koenig
Edward L. Moon
Assignee (at issue)
Jim Walter 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.