| 摘要 |
1286936 Pressure gauges DRESSER INDUSTRIES Inc 19 April 1971 [9 March 1970] 23166/71 Heading G1L In a Bourdon tube 11 the free end of the tube is flattened at 24 at right-angles or transversely to the plane of the coil, the corners 27, 28 on each side of the end of the flattened portion are bent along the dotted lines at right-angles to the flattened portion and soldered along the free end to form a pressure tight joint and also a pointer. |
