In reply to MarkRoe:
The whole North Ridge range bears an uncanny resemblance to other tents.
Not sure what the patent situation is but all geodesic tents have common roots in the early '70's work of Buckminster Fuller with the VE23 and the VE25.
Wintergear in the UK produced the 'Sapphire' which is the original 'Quasar' design. Wintergear became Wild Country which in turn became Terra Nova.
There have been numerous 'clones' over the years from companies such as Cairngorm, Blacks and probably many others.