1
James L Diepenbrock Jr, M Dean Nelsen, Marlyn F Harp: Method of making a cellular core with internal septum. The Boenig Company, Edwin H Crabtree, March 24, 1981: US04257998 (63 worldwide citation)

A method of making a panel for installation in the high velocity air flow region of an engine nacelle and other applications requiring sound absorbing material and increased air frame strength. The panel utilizes a single layer of either a metallic or nonmetallic cellular core with a solid or perfor ...


2
Method of making a cellular core with internal septum. Boeing Wichita Co, November 7, 1979: GB2019767-A (1 worldwide citation)

A sound attenuating panel for installation in the high velocity air flow region of an engine nacelle and/or other applications requiring sound absorbing material. The panel utilizing a single layer of either a metallic or nonmetallic cellular honeycomb core with a solid or perforated septum disposed ...


3
Diepenbrock James L Jr, Nelsen M Dean, Harp Marlyn F: Methode de fabrication dun fuselage, Method of making a cellular core with internal septum. Harp Marlyn F, Nelsen M Dean, Diepenbrock James L Jr, STEWART & KOLASH, February 2, 1982: CA1117267

A METHOD OF MAKING A CELLULAR CORE WITH INTERNAL SEPTUM Abstract of the Disclosure A method of making a panel for installation in thehigh velocity air flow region of an engine nacelle andother applications requiring sound absorbing material andincreased air frame strength. The panel utilizes a singl ...