Apr 20, 2012

Eduard Slavoljub Penkala Google Doodle

Google celebrated Eduard Slavoljub Penkala's 141st Birthday on April 20, 2012.








Top 5 facts about Slavoljub Eduard Penkala:






1. He was born on 20th April 1871


2. Slavoljub Eduard Penkala was a Croatian engineer and inventor of Polish-Jewish and Dutch ethnicity.


3. He became renowned for further development of the mechanical pencil (1906) – then called an "automatic pencil" – and the first solid-ink fountain pen (1907).


4. Among his patented inventions were:


- a hot water bottle – his first patented invention, the "Termofor";
- a type of bluing detergent;
a rail-car brake;
- an anode battery.


5. He died on 5th February 1922.




via Google, Wikipedia

1 comment:

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