1
David P Armstrong: Replacement chassis stock system for firearms. The United States of America represented by the Secretary of the Navy, Mark Homer, January 11, 2005: US06839998 (92 worldwide citation)

Disclosed herein is a modular, replacement chassis stock system for an existing firearm's operating mechanism possessing a simple design and incorporating durable, commercially available components. The system comprises a chassis assembly with up to three integral mounting rails, a top rail, a repla ...


2
David P Armstrong: Buttstock assembly with removable and sealable storage tubes. The United States of America represented by the Secretary of the Navy, James B Bechtel Esq, Peter J Van Bergen Esq, April 8, 2003: US06543172 (21 worldwide citation)

A buttstock assembly has a buttstock that holds a plurality of removable and sealable tubes. The buttstock has a butt plate, an elongated body extending perpendicularly away from the butt plate, and a structural web coupled to the butt plate and elongated body. The elongated body defines a central c ...


3
David P Armstrong, Robert J Verdicchio: Detergent composition. Johnson & Johnson Baby Products Company, Steven P Berman, May 5, 1981: US04265782 (20 worldwide citation)

Improved detergent compositions are provided containing a modified rosin ester and at least one other surfactant selected from the group consisting of anionic, nonionic, cationic and amphoteric surfactants.


4
David P Armstrong, Elvin R Lukenbach, Robert J Verdicchio: Modified rosin esters. Johnson & Johnson Baby Products Company, Steven P Berman, April 7, 1981: US04260550 (7 worldwide citation)

Novel modified rosin esters and a method of preparing these novel compounds are described. The novel compounds are useful in surfactant compositions.