CA468044A
(fr )
1950-09-12
Acylaceto guanazoles
CA462394A
(fr )
1950-01-10
Element d'optique
CA465093A
(fr )
1950-05-16
Perforateur a papier
CA467595A
(fr )
1950-08-29
Petoires
CA469000A
(fr )
1950-10-31
Plasticiseurs
CA469058A
(fr )
1950-10-31
Contre-vitrage
CA465823A
(fr )
1950-06-13
Lentille
CA466717A
(fr )
1950-07-18
Lentille
CA467625A
(fr )
1950-08-29
Thermostats
CA469971A
(fr )
1950-12-12
Thermometres a miroir
CA464658A
(fr )
1950-04-25
Appareil photographique
CA465715A
(fr )
1950-06-06
Systeme d'optique
CA464520A
(fr )
1950-04-18
Systeme d'optique
CA464334A
(fr )
1950-04-11
Jumelles
CA466543A
(fr )
1950-07-11
Element photographique a rendement de couleur
CA464007A
(fr )
1950-03-28
Support pour dispositif d'optique
CA463076A
(fr )
1950-02-07
Objectif d'optique
CA465876A
(fr )
1950-06-13
2-alkylidene-3-ceto-4-acylamidotetrahydrothiophene
CA468587A
(fr )
1950-10-10
Photophones
CA466159A
(fr )
1950-06-27
Balistoscope
CA466625A
(fr )
1950-07-18
Fourche de charrue
CA467118A
(fr )
1950-08-08
Enfile-aiguilles
CA467357A
(fr )
1950-08-15
Micromanometres
CA463495A
(fr )
1950-03-07
Betonniere
CA463474A
(fr )
1950-03-07
Hydroscope