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  US1384480A - Housing for transmission-gears and axles of automobiles - Google Patents

  https://www.google.de/patents/US1384480

  Keine Beschreibung vorhanden.

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  US8662513B2 - Recyclable cardboard bicycle - Google Patents

  https://www.google.de/patents/US8662513?dq=US+8662513+B2&hl=de&sa=X&ved=0ahUKEwiN14mWv47OAhWoAsAKHa0vBWAQ6AEIHjAA

  A human powered land vehicle sufficiently rigid so as to transport a human rider constructed only from palpably recyclable and shreddably recyclable materials.

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