"Ez félelmetesen hasonlit az"Anna Frank naplójá"-ra.Még sirtam is amikór elolvastam.Csak az a baj,
hogy golyóstollal irva találták meg azt is.Parker
meg a golyóstollat a háború után szbadalmaztatta.
Lehet,hogy Anna a prototypussal rendelkezett?"
Utolagos bejegyzesek voltak benne golyostollal az eredeti szoveg nem azzal irodott.
Egy kis tortenelem:
A Hungarian journalist named Ladislo Biro, created the first ballpoint pen in
1938. Biro noticed the type of ink used in newspaper printing presses dried
quickly leaving the paper dry and smudge free. He decided to create a pen
using the same ink. The thicker ink would not flow from a regular pen nib so
Biro devised a new point by fitting his pen with a tiny ball bearing at its tip.
As the pen moved along the paper, the ball rotated, picking up ink from the
ink cartridge and leaving it on the paper. This principle of the ball point pen
actually dates to 1888 when a patent was taken out by John J. Loud for a
product to mark leather, however this patent was not exploited
commercially. Biro first patented the pen in 1938 and applied for a fresh
patent in Argentina on June 10, 1943 (Ladislo and his brother Georg
emigrated to Argentina in 1940.) The licensing rights to this patent were
bought by the British Government for the war effort, the British Royal Air
Force needed a new type of pen, one that would not leak at high altitudes in
fighter planes like the fountain pen did. Their successful performance for the
airforce brought the Biro pen into the limelight. Commercially ball point pens
were sold first in Buenos Aires in 1945 by Eterpen Co. however Biro had
forgotten to get a U.S. Patent and so even with the end of World War II, the
battle was just beginning.....
http://inventors.about.com/education/sciphys/inventors/library/weekly/aa101697.htm?COB=home&terms=Biro+Laszlo&PM=112_300_T
