Selected inventions

Council of People's Commissars RSFSR (SNK RSFSR).Telegrams with suggestions of various projects and inventions.

GA RF

Council of People's Commissars RSFSR (SNK RSFSR).Telegrams with suggestions of various projects and inventions.

GA RF

Council of People's Commissars of the RSFSR (SNK RSFSR).
Telegrams with proposals of various projects and inventions.

ГА РФ

Council of People's Commissars of the RSFSR (SNK RSFSR).
Projects and reports, suggestions of engineers on various inventions.

ГА РФ