Their approach is expected to lead to a prototype machine by April.

Nevertheless, the inventor and two associates managed to get enough equipment to build a prototype machine in 1977.

Includes pictures of prototype machines (broken, but available at archive.org).

The figures were validated recently by an independent technical magazine for the prototype green machine.

The prototype machine fell apart within months of use.

Around half of these have been manufactured for prototype machines.

The pioneers - the ones who used this prototype machine.

The program also has obtained a rapid prototype machine for use of students, free of charge.

The prototype machine and was effective despite a number of serious shortcomings.

As of 2005, conventional rapid prototype machines cost around £25,000.