Granted Patent
Utility
US 5,401,459 · App. 07/956,602
Gas-assisted injection molding of hollow ribbed article
Inventors:
James M. Nichols, Roy E. Moore, Jr.
Patented Case
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Granted: Mar 28, 1995
Filed: Oct 5, 1992
Inventors
James M. Nichols
Roy E. Moore, Jr.
Assignee (at issue)
INFILTRATOR SYSTEMS INC
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.