1. The term "person", as used in section 506.210, shall mean:
- (1) The owner of the motor vehicle or trailer, whether it is being used and operated personally by said owner or by his agent;
- (2) An agent using and operating the motor vehicle or trailer for his principal;
- (3) Any person who is in charge of the motor vehicle or trailer and of the use and operation thereof with the express or implied consent of the owner.
- 2. The term "restricted, registered mail" means mail which carries on the face thereof in a conspicuous place, where it will not be obliterated, the endorsement, "deliver to addressee only", and which also requires a return receipt or a statement by the postal authorities that the addressee refused to receive and receipt for such mail.
(L. 1941 p. 435 §§ 3, 7)