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| Patents for Robert Adam Gunn | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 210,066 | Nov. 19, 1878 | W. Thomson | Magnetic compass deflector | |
 | 210,068 | Nov. 19, 1878 | W. Thomson | Navigational instrument for use with the mariners' compass | |
 | 402,364 | Apr. 30, 1889 | W. Thomson | Improved instrument for taking azimuths, using a fully reflecting prism | |