IP Library › Granted Patent US 6,821,221
Granted Patent Utility
US 6,821,221 · App. 10/278,175

Arrow point with self lubricating collar

Inventors: Michael W. Derus, Louis Daniel Massimillo
Patented Case View Patent ↗
Granted: Nov 23, 2004 Filed: Oct 22, 2002
Inventors
Michael W. Derus
Louis Daniel Massimillo
Assignee (at issue)
SOP Services, Inc.

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Quick Facts
Patent No.
US 6,821,221
App. No.
10/278,175
Filed
2002-10-22
Granted
2004-11-23
Kind
B2