Reference numerals / Apparatus for generating hydrogen gas and related gases from water / Numerals (15) February Where it is first named 4. Application Number: 1983, February 15 — Apparatus for generating hydrogen gas and related gases from water How it is written (February 15) 1× Where it is named · 1 Apparatus for generating hydrogen gas and related gases from water 1× February (February 15) 4. Application Number: 1983, February 15 Read it there → ← (10) (59) Showa →