Patent number: 4185891 Type:Grant Filed: Nov 30, 1977 Date of Patent: Jan 29, 1980 Assignee:Grumman Aerospace Corporation(Bethpage, NY) Inventor:Paul Kaestner(Huntington, NY) Primary Examiner:Ronald J. Stern Attorneys:Bruce B. Brunda,Richard G. Geib Application Number: 5/856,014 Classifications...