IP Library › Granted Patent US 5,685,240
Granted Patent Utility
US 5,685,240 · App. 08/690,633

Variable orifice plate for coal pipes

Inventors: Oliver G. Briggs, Jr., John Sund
Patented Case View Patent ↗
Granted: Nov 11, 1997 Filed: Jul 30, 1996
Inventors
Oliver G. Briggs, Jr.
John Sund
Assignee (at issue)
D. B. Riley, Inc.

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Quick Facts
Patent No.
US 5,685,240
App. No.
08/690,633
Filed
1996-07-30
Granted
1997-11-11
Kind
A