IP Library › Granted Patent US 4,925,390
Granted Patent Utility
US 4,925,390 · App. 07/323,105

Apparatus for retaining the configuration of an aperture formed through a coil

Inventors: Thomas J. Roman, Michael A. Ringle
Patented Case View Patent ↗
Granted: May 15, 1990 Filed: Mar 10, 1989
Inventors
Thomas J. Roman
Michael A. Ringle
Assignee (at issue)
Aluminum Company of America

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Quick Facts
Patent No.
US 4,925,390
App. No.
07/323,105
Filed
1989-03-10
Granted
1990-05-15
Kind
A