Friedrich Soennecken was born in 1848.
Friedrich Märker was born in 1893.
Friedrich Staps was born in 1792.
Friedrich Thielen was born in 1916.
Friedrich Ramm was born in 1744.
Friedrich Hagedorn was born in 1814.
Friedrich Soennecken died in 1919.
Ring Binders were invented in 1886 by a man named Friedrich Soennecken. He also invented the hole bunch in 1886.
Friedrich Born was born in 1903.
Friedrich Golling was born in 1883.
Gerhard Friedrich was born on 1917-09-16.
Friedrich Märker was born in 1893.
Friedrich Rainer was born in 1903.
Friedrich Paulsen was born in 1846.
Friedrich Münzer was born in 1868.
Friedrich Neelsen was born in 1854.
Friedrich Werner was born in 1621.
Friedrich Weinbrenner was born in 1766.