To the extent that a law of a State or Territory would have the effect of restricting or otherwise affecting the operation of the following provisions, the operation of the law is excluded by force of this section:
(a) section 19 (when a security interest attaches to personal property);
(b) section 21 (how a security interest is perfected).
Example: If a law of a State or Territory would have the effect of requiring a security interest to be registered under the law before it is taken to attach, or to be perfected, under this Act, the operation of the law is excluded by force of this section.