Saya mau tau Paten U.S. dari Lancelot De Mole. Jelaskan dalam bahasa melayu

Dia memegang beberapa paten, termasuk:

US patent no.1,408,569, (held by Lancelot Eldin de Mole), dated 7 March 1922, for a "Road Vehicle".

US patent no.1,448,056, (held by Lancelot Eldin de Mole), dated 13 March 1923, for a "Differential or Balance Gear".

US patent no.1,737,573, (held by Lancelot Eldin de Mole), dated 3 December 1929, for a "Changing Sign and Display Apparatus".