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Patent drawing - Обратный клапан для бурильных труб 3 Public domain image

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Summary

Русский: Обратный клапан для бурильных труб

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patent drawings eyyub mehdiyev ip protection documents in ussr soviet union inventions
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Date

1981
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Source

Wikimedia Commons
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Link

http://commons.wikimedia.org/
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Copyright info

public domain

label_outline Explore Eyyub Mehdiyev, Ip Protection Documents In Ussr

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patent drawings eyyub mehdiyev ip protection documents in ussr soviet union inventions