IP Library › Granted Patent US 4,515,228
Granted Patent Utility
US 4,515,228 · App. 06/555,735

Air groove scraper

Inventors: George E. Dolezal, Joseph L. Kelly, Jr.
Patented Case View Patent ↗
Granted: May 7, 1985 Filed: Nov 28, 1983
Inventors
George E. Dolezal
Joseph L. Kelly, Jr.
Assignee (at issue)
Hughes Tool Company - USA

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Quick Facts
Patent No.
US 4,515,228
App. No.
06/555,735
Filed
1983-11-28
Granted
1985-05-07
Kind
A