ORIGINAL PATENT APPLICATION NUMBER 839,195 FOR IMPROVEMENTS RELATING TO THE HARDENING OF METALLIC OBJECTS BY AN ELECTRICAL INDUCTION-HEATING PROCESS. (WESTMINSTER, LONDON).
Book Details
PublisherHMSO
ISBN / ASINB003X36XZM
ISBN-13978B003X36XZ8
Sales Rank99,999,999
MarketplaceUnited States 🇺🇸
