The provisions of § 38-17-14 shall not apply to an innocent purchaser of the grain, corn seeds, or agricultural products baled, mowed, ground, raked, or pulverized after the threshing, combining, shelling, husking, shredding, cutting, hulling, baling, mowing, grinding, raking, or pulverizing, unless the said lien be filed within ten days after completion of the service.
SDCL 38-17-17