H. Harsant, and Mitchelite Petrol Air Gas System Co., Ltd. 25, 334. ... Vacuum Concentrating Apparatus. ... Readers desiring to peruse any of the following specifications in the original can obtain a copy by sending 8d. ir stamps to the Comptroller, Patent Office ... Nutter, Hoover, and Minerals Separation, Ltd. Zinc Distillation.
|Title||:||The Chemical Trade Journal and Chemical Engineer|