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Ladislao Biro

Laszlo Jozsef Biro, Jewish Hungarian-born Argentine inventor (Budapest 29 September 1899 – Buenos Aires 24 October 1985)


Ballpoint pen (1931) patented in 1938

A fountain pencil (1928)

Ballpoint pen ink

Mechanical machines and retractor for ballpoint pens  

A bottle labeling line and device for the same purpose 

A phenol-based resin

A continuous process for phenolic resins (1944)

A mechanical gearbox (1932)

A washing machine (1930)

Inviolable lock

Clinical thermograph (1943)

A link for curtains

Devices for recording blood pressure

A process for amelioration of iron ramrods resistance (1944)

Application of magnetic sustenance of railroad cars

Air filter for carbon activated cigarettes

Device for beheading ampoules

Figure mirror

Devices for energy exploitation from sea waves (1958)

Roll on scent dispenser with box

A molecular and isotopic system for gas fractionation (1978)

A method for uranium hexafluoride enrichment (1980s)


Other micromechanic artifacts