Complex sentence: The Brin brothers negotiated an agreement to use the Linde patents; which gave Carl von Linde a stake and a board position in Brin's Oxygen Company, which he held until 1914.
Split into simpler sentences: The Brin brothers negotiated an agreement to use the Linde patents. In exchange, Carl von Linde was given a stake and a board position in Brin's Oxygen Company, which he held until 1914.