All lawful uses of land or of a building or other structure
existing on the effective date of this chapter may be continued, altered,
restored, reconstructed, sold or maintained even though such use may
not conform to the use, height, area, yard and other regulations of
the district in which it is located, provided such nonconforming uses
shall comply with the provisions of this article.
If a nonconforming use of a building or land is abandoned, ceases
to operate, or is discontinued for a period of one year or more, the
nonconforming status of said nonconforming use shall be lost, and
subsequent use of the property shall conform with all provisions of
this chapter.