the paper clip
he invented the paper clip
To keep papers together
Johann Vaaler invented the wire paper clips
Proposed the theory of burning called the phlogiston theory
O.o only Gutenberg I have heard of was johann Gutenberg and he created the printing press in the 1450s
he invented the paper clip
Johan Vaaler had a wife named Barbra and a golden retriever.On answers.com, type in" What did Johan Vaaler invent in the 1900's" for a biography.:)
To keep papers together
in 1899 by a norweigen man called Johan Vaaler
Johann Vaaler invented the wire paper clips
Camera
Johan Vaaler was born on March 15, 1866. Johan Vaaler was born on March 15, 1866.
Johan Vaaler died March 14, 1910. John Vaaler was died on March 14, 1910
The Clarinet
It was Johann Friedrich GutsMuths It was Johann Friedrich GutsMuths
he made the caculater
ca 1450