product_view.xml

<?xml version="1.0" encoding="utf-8"?>
<openerp>
  <data>

    <record id="view_product_historical_margin_form" model="ir.ui.view">
      <field name="name">product_historical_margin.form</field>
      <field name="model">product.product</field>
      <field name="inherit_id" ref='product_standard_margin.sale_markup_product_form'/>
      <field name="arch" type="xml">
        <field name="standard_margin_rate" position="after">
          <field name="margin_absolute"/>
          <field name="margin_relative"/>
        </field>
      </field>
    </record>

    <record id="view_product_historical_margin" model="ir.ui.view">
      <field name="name">product.product.historical_margin.tree</field>
      <field name="model">product.product</field>
      <field name="arch" type="xml">
        <tree string="Historical Margins" create="false">
          <field name="default_code"/>
          <field name="name"/>
          <field name="categ_id" invisible="1"/>
          <field name="variants" groups="product.group_product_variant"/>
          <field name="type"/>
          <field name="state" groups="base.group_extended"/>
          <field name="price" invisible="not context.get('pricelist',False)"/>
          <field name="margin_absolute"/>
          <field name="margin_relative"/>
          <field name="standard_margin_rate"/>
          <field name="company_id" groups="base.group_multi_company" invisible="1"/>
        </tree>
      </field>
    </record>

    <act_window
       id="act_product_act_open_invoice_lines"
       name="Margin Details"
       domain="[('product_id','in',active_ids),('invoice_state','in',['open', 'paid']),('invoice_type','in',['out_refund','out_invoice'])]"
       res_model="account.invoice.line"
       src_model="product.product"
       view_mode="tree,form"
       view_id="view_invoice_line_tree_from_product"
       context="{'search_default_product':1,'search_default_year':1}"
       />

  </data>
</openerp>