This entirely depends on the designer and the client. It can be done both ways but, having said that, it depends first on the terms and conditions of the designer as they may specify that they only license their work to a business to use and this can often result in an annual licensing fee or a flat rate. This of course does nothing to maintain a contract of exclusivity for that brand because the designer can license that work to another company if they wish unless otherwise specified. The client may request to take ownership of their logo and that is something that needs to be worked out with the designer. Sometimes a designer that retains their work and all rights, will offer a buy-out-fee which is in addition to any fees that covered the design costs. Some corporations, large businesses and franchises wish to own their logo to maintain brand exclusivity and with that brand they can accrue value on that intellectual property, value that can one day be sold. Hope this answers your question but please feel free to contact us directly for more details. desalviowebdesigns.com
Links: desalviowebdesigns.com

EPA does not recommend that air ducts be cleaned except on an as-needed basis because of the continuing uncertainty about the benefits of duct cleaning under most circumstances. EPA does, however, recommend that if you have a fuel burning furnace, stove, or fireplace, they be inspected for proper functioning and serviced before each heating season to protect against carbon monoxide poisoning. Some research also suggests that cleaning dirty cooling coils, fans and heat exchangers can improve the efficiency of heating and cooling systems. However, little evidence exists to indicate that simply cleaning the duct system will increase your system's efficiency.

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