IP Library › Granted Patent US 4,286,902
Granted Patent Utility
US 4,286,902 · App. 06/110,579

Self-colleting drill

Inventors: Robert L. Gagliano, Herman G. Feuerstein
Patented Case View Patent ↗
Granted: Sep 1, 1981 Filed: Jan 9, 1980
Inventors
Robert L. Gagliano
Herman G. Feuerstein
Assignee (at issue)
Dresser Industries, Inc.

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Quick Facts
Patent No.
US 4,286,902
App. No.
06/110,579
Filed
1980-01-09
Granted
1981-09-01
Kind
A