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| US4265179 | 19 Mar 1979 | 5 May 1981 | Alan William Tupper | Load-transfer device | | US4352330 | 31 Mar 1980 | 5 Oct 1982 | | Apparatus for suspending, locating, moving or fastening loads | | US4459916 | 23 Mar 1982 | 17 Jul 1984 | | Load-transfer system | | US4470354 | 18 May 1982 | 11 Sep 1984 | | Load-transfer device | | US6412420 | 6 Oct 2000 | 2 Jul 2002 | Sellstrom Manufacturing Co. | Cable by-pass device and system |
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