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| Patents for B. A. Hjorth Co. | |||||
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| Picture | Number | Date | Patentee | Title | |
 | SE-1,636 | Aug. 17, 1888 | J.P. Johansson | Universalrortang | |
 | GB-188,818,593 | Dec. 19, 1888 | J.P. Johansson | Pipe Wrench | |
 | SE-4,066 | May 11, 1892 | J.P. Johansson | Stallbar skrufnyckel | |
 | SE-38,643 | Mar. 21, 1911 | J.P. Johansson | Anordning vid skiftnycklar | |
 | SE-36,093 | Jun. 28, 1912 | J.P. Johansson | Rortang | |
 | SE-41,591 | Apr. 29, 1914 | H. Brynge | Rortang | |
 | SE-40,417 | Dec. 21, 1914 | H. Brynge | Anordning vid skiftnycklar | |