Patent classifications
E
FIXED CONSTRUCTIONS
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E02
HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
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E02F
DREDGING; SOIL-SHIFTING
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9/00
Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
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E02F9/22
Hydraulic or pneumatic drives
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E02F9/2221
Control of flow rate; Load sensing arrangements
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E02F9/2232
using one or more variable displacement pumps
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E02F9/2235
including an electronic controller
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