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| All Patents in class 475/90 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,251,466 | Jan. 01, 1918 | H. Bilgram | Automatic braking device for compensation-gears of automobiles and other similar vehicles | motor vehicles | |
| 1,277,837 | Sep. 03, 1918 | H. Bilgram | Automatic braking device for compensation-gears of automobiles and other similar vehicles | motor vehicles | |