1
Bertil Werjefelt: Decompression and toxic fume protection apparatus. Xenex Corporation, Xenex Systems Partnership I, Shlesinger & Myers, March 12, 1991: US04998529 (8 worldwide citation)

Decompression and toxic fume protection apparatus comprising an inner chamber adapted to surround the head of the wearer, an inflatable and concentric outer chamber, a gas reservoir, means for removal of carbon dioxide and passageways for the circulation of gas through the apparatus.


2
Werjefelt Bertil: Decompression and toxic fume protection apparatus.. Du Pont, October 15, 1986: EP0197641-A1 (2 worldwide citation)

Apparatus comprising an inner chamber (6) adapted to surround the head of the wearer, an inflatable and concentric outer chamber (2), a gas reservoir (4), means for removal of carbon dioxide (5) and passageways for the circulation of gas through the apparatus.


3
Werjefelt Bertil: Appareillage de decompression et de protection contre les fumees toxiques, Decompression and toxic fume protection apparatus. Xenex Corporation And Xenex Systems Parnership I, Werjefelt Bertil, Du Pont de Nemours Ei, BULL HOUSSER & TUPPER, November 27, 1990: CA1276857

Decompression and Toxic Fume Protection Apparatus Abstract of the Disclosure Decompression and toxic fume protectionapparatus comprising an inner chamber adapted tosurround the head of the wearer, an inflatable andconcentric outer chamber, a gas reservoir, means forremoval of carbon dioxide and pass ...