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JPS4936565B1 |
1286914 Grabs P J M T ALLARD 14 April 1970 [28 April 1969 22 Oct 1969] 17678/ 70 Heading E1F An earth excavator comprises a grab having a cylindrical body 1 in which is slidably mounted a piston 2 connected by links 50 to shovels 3 pivot...
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