SU217345A1 - - Google Patents

Info

Publication number
SU217345A1
SU217345A1 SU1160008A SU1160008A SU217345A1 SU 217345 A1 SU217345 A1 SU 217345A1 SU 1160008 A SU1160008 A SU 1160008A SU 1160008 A SU1160008 A SU 1160008A SU 217345 A1 SU217345 A1 SU 217345A1
Authority
SU
USSR - Soviet Union
Prior art keywords
pipe
twisting
ribs
longitudinal ribs
pipes
Prior art date
Application number
SU1160008A
Other languages
English (en)
Russian (ru)
Original Assignee
Э. В. Никулин
Publication of SU217345A1 publication Critical patent/SU217345A1/ru

Links

SU1160008A SU217345A1 (https=)

Publications (1)

Publication Number Publication Date
SU217345A1 true SU217345A1 (https=)

Family

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