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Country Number format Kind code Example From To Document type
 SU n(1-6) A SU137906     Patent
 SU n(1-7) A1 SU1040773   AD 19801231 Basic inventor's certificate
 SU n(1-7) A1 SU1151280 AD 19810101   Inventor's certificate
 SU n(1-7) A2 SU1091027   AD 19801231 Addition to inventor's certificate
 SU n(1-7) A2 SU1000100 AD 19810101   Additional inventor's certificate
 SU n(1-7) A3 SU391785   AD 19801231 Basic patent
 SU n(1-7) A3 SU1003769 AD 19810101   Patent
 SU n(1-7) A4 SU432705   AD 19801231 Patent of addition
 SU n(1-7) A4 SU797606 AD 19810101   Additonal patent
 SU n(1-7) C SU1090149     Patents replacing inventor's certificate
 SU n(1-7) K1 SU1835022     Non-official translation of SU - A document, not issued by patent office

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Legend: l=a-z / n=0-9 / c=century / y=year / j=Emperor year / ( ) contains the length of the numerical part.
AD=application date / PD=publication date / PN=publication number.
A blank in "From" or "To" = without limit going backwards / forwards respectively.