Del. Code 6, § 4306 : Commerce And Trade — Retail Installment Sales — Provisions Of Retail Installment Contracts — Blank spaces to be filled in before signing by buyer Date: 2 Sep 2016 TEXT PDF Current through 2016 Legislative Session, Act 399 The seller shall not obtain the signature of the buyer to a contract when it contains blank spaces to be filled in after it has been signed. Del. C. § 4306 6 Del. C. 1953, § 4306; 52 Del. Laws, c. 342.;