How many kinds of cylinders are available for typewriter ?
A3
B2
C1
D4
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Who was the first author to submit typewritten book manuscript ?
After a full stope leave _space.
The Standard Typewriter was introduced by
The force of the main spring is exerted to the carriage by means of the following
- Draw band
- Rigid dog
- Pinion wheel
- Loose dog
Feeding Tray is also called -------