§ 73-b. Misdemeanors. Every person convicted of a misdemeanor pursuant to any of the provisions of this chapter for which another penalty is not provided shall for a first conviction thereof be punished by a fine of not less than two hundred fifty nor more than five hundred dollars or by a period of imprisonment of not more than thirty days or by both such fine and imprisonment; for a conviction of a second violation, both of which were committed within a period of twenty-four months, such person shall be punished by a fine of not less than five hundred nor more than one thousand five hundred dollars or by a period of imprisonment of not more than sixty days or by both such fine and imprisonment; upon a conviction of a third or subsequent violation, all of which were committed within a period of twenty-four months, such person shall be punished by a fine of not less than one thousand five hundred nor more than two thousand five hundred dollars or by a period of imprisonment of not more than one hundred twenty days or by both such fine and imprisonment.