Third Quarterly Progress Report Covering the Period April 1, 1955 to August 31, 1956 OBJECT- TO provide design data for crystal units operating at controlled temperature up to 200℃

摘要

The original aging specifications were met by a group of crystals.nThe aging specifications were tightened by the contracting officer.nEquipment and ratchets ware re-examined and changed in light of the new requirement. Current tests lead to belief that tightenednSpecifications may be feasible.