| 1. | Siderography enabled the steel plates to be copied with greater frequency.
|
| 2. | One of the submitted proposals for this contest had been the use of siderography, though it was not viable at the time.
|
| 3. | He submitted his proposal for the use of siderography in banknote production, but the idea was not well received by the Bank of England.
|
| 4. | Despite this, the idea gained traction, and by the end of the 1920s siderography was in use by over 200 banks in the United Kingdom.
|
मोबाइल