First commercially successful typewriter was produced in ?
A1970s
B1870s
C1980s
D1890s
A1970s
B1870s
C1980s
D1890s
Related Questions:
Rocher Mechanism includes the functioning of the following parts :
(i) Pinion wheel, Escapement wheel
(ii) Escapement wheel, loose dog
(iii) Pinion wheel, Segment slots
(iv) Loose dog, Platen.