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Historical patents

Technological Inventions 1850 - 1899

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Shelfmark:: 29/000613

granted on:: 1879-04-18

Title:: Verbesserte direkt wirkende Rotationsbohrmaschine für Gesteinsbohrungen

Inventor:: Schwarz, & Hochegger

Key:: 1879/003339

Place of publication:: Wien

Country:: Austria

Class:: 1 - Aufbereitung von Erzen, Mineralien und Brennstoffen; 5 - Bergbau

Collection:: General

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