In E. A. Davis & Co. v. Richards (1953) 120 Cal. App. 2d 237, the court found that the supplier was exempt from the licensing requirement of section 7045 because he supplied a patented prefabricated kitchen cabinet unit. The court stated that the product "was not actually fabricated into nor did it become a permanent, fixed part of the structure." (120 Cal. App. 2d at p. 240.)