Granted Patent
Utility
US 4,832,105 · App. 07/143,339
Investment casting method and apparatus, and cast article produced thereby
Inventors:
Raymond M. Nagan, Antulio D. Marrero, Rajeev Naik, Victoria Gleyzer
Patented Case
View Patent ↗
Granted: May 23, 1989
Filed: Jan 13, 1988
Inventors
Raymond M. Nagan
Antulio D. Marrero
Rajeev Naik
Victoria Gleyzer
Assignee (at issue)
The Interlake Companies, 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.