IP Library › Granted Patent US 4,757,983
Granted Patent Utility
US 4,757,983 · App. 06/898,430

Head and chin for face-down operations

Inventors: Charles D. Ray, Eugene A. Dickhudt
Patented Case View Patent ↗
Granted: Jul 19, 1988 Filed: Aug 20, 1986
Inventors
Charles D. Ray
Eugene A. Dickhudt
Assignee (at issue)
Charles D. Ray, Ltd.

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Quick Facts
Patent No.
US 4,757,983
App. No.
06/898,430
Filed
1986-08-20
Granted
1988-07-19
Kind
A