Catchwords:

PATENTS – construction – where claims in suit comprised method claims and system claims for core sample orientation – where the method in claim 1 involved two timers, one in the downhole device and one on the surface – whether the primary judge erred in his construction of the patent – whether, on the true construction of claim 1, it required both the downhole timer and the surface timer to count with reference to the same initial reference time – whether the word “beyond” meant no more than “after” or “later than” – appeal dismissed