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| All Patents in class 414/563 | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 1,537,249 | May 12, 1925 | R.E. Manley | Towing pole | |
 | 1,794,148 | Feb. 24, 1931 | J.G. Collins | Wrecking crane | |
 | 1,825,359 | Sep. 29, 1931 | R.E. Manley | Light wrecking crane | |