Granted Patent
Utility
US 5,407,624 · App. 08/073,551
Method and apparatus for processing of raw plastics for reuse
Inventors:
Harold V. Engh, III, Verlyn Swagger
Patented Case
View Patent ↗
Granted: Apr 18, 1995
Filed: Jun 9, 1993
Inventors
Harold V. Engh, III
Verlyn Swagger
Assignee (at issue)
North American Plastics 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.