Granted Patent
Utility
US 4,776,996 · App. 06/641,498
Process and apparatus for forming hollow structures from powdered thermoplastic materials
Inventors:
Larry J. Ashton, Roland J. Christensen, Randy L. Crane
Patented Case
View Patent ↗
Granted: Oct 11, 1988
Filed: Aug 16, 1984
Inventors
Larry J. Ashton
Roland J. Christensen
Randy L. Crane
Assignee (at issue)
FIBERTECH 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.