Documents - Rospatent

USSR Patent # 198,939 - Tachyon 1966

Publisher: Rospatent
Date: USSR application filed March 1966
Derailleur brands: Tachyon
Derailleurs: unknown

USSR Patent # 380,518 - Kharkov 1970

Publisher: Rospatent
Date: USSR application filed June 1970
Derailleur brands: Kharkov
Derailleurs: Kharkov copy of a Campagnolo Record

USSR Patent # 532,546 - Kharkov 1975

Publisher: Rospatent
Date: USSR application filed April 1975
Derailleur brands: Kharkov
Derailleurs: Kharkov (2nd style), Kharkov (3rd style)

USSR Patent 532,546 - Kharkov 2nd style thumbnail

USSR Patent # 802,122 - unknown 1979

Publisher: Rospatent
Date: USSR application filed January 1979
Derailleur brands: unknown
Derailleurs: unknown

USSR Patent 802,122 - unknown derailleur thumbnail

USSR Patent # 921,939 - unknown 1979

Publisher: Rospatent
Date: USSR application filed July 1979
Derailleur brands: unknown but eerily similar to Campagnolo's designs
Derailleurs: unknown but eerily similar to Campagnolo Chorus (C010-SM) and Campagnolo Chorus (C010-LG)

USSR Patent 921,939 - unknown derailleur thumbnail

USSR Patent # 850,485 - Perm 1979

Publisher: Rospatent
Date: USSR application filed September 1979
Derailleur brands: Perm
Derailleurs: unknown

USSR Patent # 893,668 - Perm 1979

Publisher: Rospatent
Date: USSR application filed September 1979
Derailleur brands: Perm, ZIF
Derailleurs: unknown, some similarities to Perm

USSR Patent # 925,731 - Perm Tachyon 1980

Publisher: Rospatent
Date: USSR application filed August 1980
Derailleur brands: Perm, Tachyon, Zif
Derailleurs: unknown, some similarities to Perm

USSR Patent 925,731 - Perm-Tachyon thumbnail

USSR Patent # 933,535 - Tachyon 1980

Publisher: Rospatent
Date: USSR application filed October 1980
Derailleur brands: Tachyon
Derailleurs: unknown

Rospatent - or the Federal Service for Intellectual Property - is the Russian patent office. It appears to be the home of a rich haul of derailleur patents from the USSR, many of which might be regarded as being rightfully Ukrainian.

Divorce is tough that way.