Unpaid seller’s lien

   (1)  The unpaid seller of goods loses his lien thereon—

   (a)  when he delivers the goods to a carrier or other bailee for the purpose of transmission to the buyer without reserving the right of disposal of the goods;

   (b)  when the buyer or his agent lawfully obtains possession of the goods;

   (c)  by waiver thereof.

   (2)  The unpaid seller of goods, having a lien thereon, does not lose his lien by reason only that he has obtained a decree for the price of the goods.