IP Library › Granted Patent US 4,493,203
Granted Patent Utility
US 4,493,203 · App. 06/461,172

Resilient internal mandrel

Inventors: Lionel H. Wheeler, Robert G. Goekler, Daniel LÜDDEKE
Patented Case View Patent ↗
Granted: Jan 15, 1985 Filed: Jan 26, 1983
Inventors
Lionel H. Wheeler
Robert G. Goekler
Daniel LÜDDEKE
Assignee (at issue)
Crutcher Resources Corporation

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Quick Facts
Patent No.
US 4,493,203
App. No.
06/461,172
Filed
1983-01-26
Granted
1985-01-15
Kind
A