IP Library › Granted Patent US 4,896,405
Granted Patent Utility
US 4,896,405 · App. 07/220,402

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Inventors: Robert S. Simmons, James P. Unger
Patented Case View Patent ↗
Granted: Jan 30, 1990 Filed: Jul 18, 1988
Inventors
Robert S. Simmons
James P. Unger
Assignee (at issue)
Marshall and Williams Company

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Quick Facts
Patent No.
US 4,896,405
App. No.
07/220,402
Filed
1988-07-18
Granted
1990-01-30
Kind
A