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Go to app/code/core/Mage/Catalog/Block/Product and created a new file called Manufacturer.php and pasted this block code:

public function getAllManu()
    {
      $product = Mage::getModel('catalog/product');
      $attributes = Mage::getResourceModel('eav/entity_attribute_collection')
                  ->setEntityTypeFilter($product->getResource()->getTypeId())
                  ->addFieldToFilter('attribute_code', 'manufacturer');
      $attribute = $attributes->getFirstItem()->setEntity($product->getResource());
      $manufacturers = $attribute->getSource()->getAllOptions(false);
      return $manufacturers;


    }

Then go to /app/design/frontend/[theme name]/[theme name]/template/catalog/product and created a new .phtml file called manufacturer.phtml and paste this code:

<ul id="manufacturer_list">
    <?php foreach ($this->getAllManu() as $manufacturer): ?>
        <li><a href="<?php Mage::getURL() ?>catalogsearch/advanced/result/?&manufacturer;[]=<?php echo $manufacturer&#91;'value'&#93; ?>"><?php echo $manufacturer&#91;'label'&#93; ?></a></li>
    <?php endforeach; ?>
</ul>

From there log into the backend and created a new page via the CMS menu and inserted the following code:

{{block type="catalog/product_manufacturer" name="home.catalog.product.manufacturer" alias="product_manufacturer" template="catalog/product/manufacturer.phtml"}}

Manufacturer.php
manufacturer.phtml

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Magento ver: 1.3.2.4