The organic group has the formula -Ar-Sn-Ar'- in which Ar and Ar' are arylene groups or -Ar-Sn-Ar' in which Ar is an arylene group, Ar' is an aryl group and n is 1 to 8.

Ar' has the meaning given for Ar or is an Ar-Z-Ar group.

Ar-Cl (1) (In formula (1), Ar represents an aromatic group that may have a substituent.) Ar-Ar (2) (In formula (2), Ar is as defined above.)

The description concerns a photochromic substance, with a diaryl-2H-naphthopyrane structure having a link in the form Y-Ar, Z-Ar, Y-Ar-Y, Y-Ar-Y', Y-Ar-Z, Z-Ar-Z or Z-Ar-Z', in which Y, Y', Z and Z' are pyranes.

see AR-5, AR-6 and AR-7 for periods when the specific territories within the area referred to in AR-8 were not authorised

see AR-5, AR-6 and AR-7 for periods when the specific territories within the area referred to in AR-8 were not authorised

see AR-5, AR-6 and AR-7 for periods when the specific territories within the area referred to in AR-8 were not authorised

see AR-5, AR-6 and AR-7 for periods when the specific territories within the area referred to in AR-8 were not authorised

see AR-5, AR-6 and AR-7 for periods when the specific territories within the area referred to in AR-8 were not authorised

See AR-5, AR-6 and AR-7 for periods when the specific territories within the area referred to in AR-8 were not authorised

Ar and Ar' are aromatic or aryl type groups.

Ar, Ar' and W may be as defined in the specification.

Also disclosed are a system for implementing a mobile AR service, a mobile AR client, and a mobile AR server.

in Lithuanian Virškvotiniu nelaikomas (cukrus) ar (izogliukozė) ar (inulino sirupas) eksportui be grąžinamosios išmokos

in Lithuanian Virškvotiniu nelaikomas (cukrus) ar (izogliukozė) ar (inulino sirupas) eksportui be grąžinamosios išmokos.