389 A.2d 246 Travelers Indemnity Company, Appellant v. Rexnord, Inc., Appellee. Commonwealth Court of Pennsylvania.Argued May 4, 1978 July 26, 1978. Principal and surety — Extension of time of payment — Acquiescence of surety — Waiver of defense — Limitation of action — Public Works Contractors’ Bond Law of 1967, Act 1967, December 20, P.L. […]