Granted Patent
Utility
US 6,688,343 · App. 10/252,062
Apparatus for filling insulation material and method thereof
Inventors:
Hun Yong PARK, Hyun Chul Sim, Do Yeon Kim
Patented Case
View Patent ↗
Granted: Feb 10, 2004
Filed: Sep 20, 2002
Inventors
Hun Yong PARK
Hyun Chul Sim
Do Yeon Kim
Assignees (at issue)
SAMSON AKTIENGESELLSCHAFT
Samson Perlite Co., Ltd.
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.