CA559270A
(fr )
1958-06-24
Structure de soupape
CA552126A
(fr )
1958-01-21
Vannelle a etranglement
AU222298B2
(en )
1958-11-06
Improved gate valve
CA551485A
(fr )
1958-01-14
Vannes
AU227537B2
(en )
1959-03-26
Gate valves
CA556924A
(fr )
1958-05-06
Structure de soupape
CA581395A
(fr )
1959-08-18
Structure de vanne
CA556611A
(fr )
1958-04-29
Structure de soupape
AU3767058A
(en )
1958-11-06
Improved gate valve
AU4164358A
(en )
1959-03-26
Gate valves
AU225393B2
(en )
1959-03-05
Bonnetless gate valve device
AU232032B2
(en )
1959-10-01
Improved slow closing valve
CA567552A
(fr )
1958-12-16
Soupapes de vidange
AU227240B2
(en )
1958-07-10
Valves
CA564442A
(fr )
1958-10-07
Soupapes
CA551477A
(fr )
1958-01-14
Soupapes
CA554829A
(fr )
1958-03-25
Soupape
CA564882A
(fr )
1958-10-21
Valve
CA551181A
(fr )
1958-01-07
Soupape
CA567541A
(fr )
1958-12-16
Barriere
AU238856B2
(en )
1959-12-10
Improved valve
CA560909A
(fr )
1958-07-29
Soupape libre
CA551354A
(fr )
1958-01-07
Structure de soupape
CA554408A
(fr )
1958-03-18
Assemblage de soupape
AU4119258A
(en )
1959-03-05
Bonnetless gate valve device