72395657
Jun 23, 1971
May 8, 1973
FORMULATION ADAPTED TO BE APPLIED TO THE INNER SURFACES OF CONCRETE FORMS AND SERVING TO PREVENT SUCH SURFACES FROM ADHERING OR STICKING TO THE POURED CONCRETE TO THE END THAT AFTER HARDENING OF THE CONCRETE THE FORMS MAY BE READILY REMOVED FOR PURPOSES OF RE-USE
Musical Instruments