acidimeterの例文

例文

1. By October 1934, he had registered patent application US Patent No . 2, 058, 761 for his " acidimeter ", later renamed the pH meter.
2. In October 1934 Arnold Orville Beckman registered the first patent for a complete chemical instrument for the measurement of pH, U . S . Patent No . 2, 058, 761, for his " acidimeter ", later renamed the pH meter.