Ques : Who was granted a patent in 1824 for the invention of “Portland cement”?
A. Jospeh Aspdin
B. Albertus Magnus
C. Louis Agassiz
D. Ludwig Boltzmann
Ans : A. Jospeh Aspdin
Ques : Who was granted a patent in 1824 for the invention of “Portland cement”?
A. Jospeh Aspdin
B. Albertus Magnus
C. Louis Agassiz
D. Ludwig Boltzmann
Ans : A. Jospeh Aspdin