49 Pa. Stat. § 1302 : Statutes (Unconsolidated) — MECHANICS' LIENS — MECHANICS' LIEN LAW OF 1963 — RIGHT TO LIEN — Presumption as to use of materials
Materials for use in or upon an improvement placed on or near the property or delivered to the owner pursuant to a contract shall be presumed to have been used therein in the absence of proof to the contrary.
49 P.S. § 1302
1963, Aug. 24, P.L. 1175, No. 497, art. III, § 302.