The Director shall issue the following classes of certificates: Individual owner certificate; and Multiple owner certificate. The Director is authorized to reissue all certificates, upon renewal, in the appropriate class of certificate starting October 1, 2010. If the application is approved, the Director shall, for each vehicle, issue a certificate which shall be valid for one year. The certificate remains the property of Prince George's County and must be returned to the County immediately upon final removal of the vehicle from service, unless otherwise transferred under Section 20-155 of this Code. The certificate issued must be held by an applicant for a minimum of three years before it may be transferred in accordance with Section 20-155 of this Code. Any holder of a certificate acquired pursuant to the transfer provisions of this Subtitle must hold the certificate a minimum of three years before it may be transferred again. No person, including an individual or multiple owner providing taxicab service in the County, other than the person to whom it is issued shall use a certificate. The certificate shall not be subleased and may only be transferred pursuant to Sec. 20-155 of the Code.