The official nomenclature for the Canadian used (excluding the US supplied UN and ICCS vehicles) post-Second War 'Jeeps' was
M38CDN
M38A1CDN1
M38A1CDN2
M38A1CDN3
M151A2
Iltis
The MUTT portion of the US M151A2 MUTT designation means Military Utility Tactical Truck.
Here are a couple of scans of original Canadian manuals that show the official designation. I have yet to find any primary source documentation that refers to the Canadian Jeeps by 'Pattern' although if there is something out there I would like to see it. The CFR number does start with a two-digit year prefix which does indicate the year the vehicle was taken into service, but is not a 'pattern' indicator.
