CA442647A
(fr )
1947-07-01
Recuperation d'halogenure d'hydrogene
CA439270A
(fr )
1947-01-21
Recuperation de soufre
CA439621A
(fr )
1947-02-11
Recuperation de soufre
CA442979A
(fr )
1947-07-15
Recuperation d'hydrocarbures
CA440368A
(fr )
1947-03-25
Perforateur
CA440431A
(fr )
1947-03-25
Separation de sulfure d'hydrogene
AU143858B2
(en )
1948-02-03
Power recovery system
CA445151A
(fr )
1947-11-18
Recuperation d'ammoniaque
CA441252A
(fr )
1947-05-06
Gyrocompas
CA439651A
(fr )
1947-02-11
Structure a l'epreuve de la flamme
AU134743B2
(en )
1947-06-19
Gas masks
CA439509A
(fr )
1947-02-04
Recuperation de chrome
CA439510A
(fr )
1947-02-04
Recuperation de chrome
CA445100A
(fr )
1947-11-18
Lampe a vide
CA441213A
(fr )
1947-05-06
Co-polymerisation d'haloide vinylique
CA440980A
(fr )
1947-04-29
Boite de conserve
CA445204A
(fr )
1947-11-25
Crible
CA443833A
(fr )
1947-08-26
Structure de sac
AU141197B2
(en )
1947-09-11
Bag structure
CA441115A
(fr )
1947-04-29
Masque contre le gaz
CA444927A
(fr )
1947-11-11
Polycopie
CA443128A
(fr )
1947-07-22
Regle a paralleles
CA440761A
(fr )
1947-04-15
Coupe-circuit
AU137080B2
(en )
1947-08-21
Ripper
AU134618B2
(en )
Improvements ingrates