Answer: A, B, C
[Answer]ABC
[Analysis] Inimitable resources include physically unique resources and paths Dependent resources, resources with causal ambiguity, and resources with economic constraints. Patented production technology is a physically unique resource; corporate culture is a resource with causal ambiguity. Company C's after-sales customer service system is a path-dependent resource. Therefore options A, B and C are correct. Well-known brands are durable resources.