Widespread, cassette radio. Storage cassettes make a simple stand as shown in the figure.
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Milling cutter instead of a plow
The tiller developed by Heinrich Alekseevich Kuznetsov differs from many homemade designs by using cutters instead of a plow. Rotating on the working shaft, they simultaneously till the...
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Georgy Sergeevich Khokhlachev is a military pensioner, 77 years old. Throughout his conscious life, he has been enthusiastically engaged in technical creativity: rationalization work,...
