Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filedfiledCritical
Application grantedgrantedCritical
Publication of FR596367ApublicationCriticalpatent/FR596367A/fr
G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
G02B27/02—Viewing or reading apparatus
G02B27/08—Kaleidoscopes
Landscapes
Physics & Mathematics
(AREA)
General Physics & Mathematics
(AREA)
Optics & Photonics
(AREA)
FR596367D1924-03-101925-03-10Appareil produisant des images kaléidoscopiques et comportant un porte-objet constitué par une bande ou un film
ExpiredFR596367A
(fr)