Brevettato cranks

From Treviolo, near Bergamo in Northern Italy. Still in business making specialty cycling items.
PMP stands for Piccola Meccanica di Precisione [Small Precision Engineering]

Update 1.5.2020

1981 advertisement + 1983 article by Harvey Sachs

Click for 6 pictures of PMP crank, New In Box.

The PMP cranks set installed on a custom Time Trail bike by Tom Board.

The great 1980s time triallist Ian Cammish at speed using PMP cranks