The report contains ten-year analysis with the following sections
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Title of patent family (most common patent title) |
Family members |
Filing year |
---|---|---|
local and linear total variation-based filtering method | 1 | 2014 |
pipe column hoisting device | 1 | 2012 |
drilling tool lifting device | 1 | 2012 |
movable oil fishing vehicle | 1 | 2012 |
walking beam balance oil pumping machine | 1 | 2012 |
water-flow regulator | 1 | 2012 |
separated injection device | 1 | 2012 |
oil supply device of well-drilling diesel engine | 1 | 2012 |
sand prevention pump | 1 | 2012 |
barrel oil pump | 1 | 2012 |