A. If the word "grant" or the word "convey" is used in a conveyance by which an estate of inheritance or fee simple is to be passed, the following covenants and none other, on the part of the grantor for himself and his heirs, to the grantee and his heirs and assigns, are implied unless restrained by express terms contained in the conveyance:

1. 1. That previous to the time of execution of the conveyance the grantor has not conveyed the same estate or any right, title or interest therein, to any person other than the grantee.
2. 2. That the estate is at the time of execution of the conveyance free from encumbrances.