Full Screen Maximize 32 Filled icon

<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 32 32" width="24" height="24"><path fill="currentColor" d="M3 6.5A3.5 3.5 0 0 1 6.5 3h4.25a1.25 1.25 0 1 1 0 2.5H6.5a1 1 0 0 0-1 1v4.25a1.25 1.25 0 1 1-2.5 0V6.5Zm17-2.25c0-.69.56-1.25 1.25-1.25h4.25A3.5 3.5 0 0 1 29 6.5v4.25a1.25 1.25 0 1 1-2.5 0V6.5a1 1 0 0 0-1-1h-4.25c-.69 0-1.25-.56-1.25-1.25ZM4.25 20c.69 0 1.25.56 1.25 1.25v4.25a1 1 0 0 0 1 1h4.25a1.25 1.25 0 1 1 0 2.5H6.5A3.5 3.5 0 0 1 3 25.5v-4.25c0-.69.56-1.25 1.25-1.25Zm23.5 0c.69 0 1.25.56 1.25 1.25v4.25a3.5 3.5 0 0 1-3.5 3.5h-4.25a1.25 1.25 0 1 1 0-2.5h4.25a1 1 0 0 0 1-1v-4.25c0-.69.56-1.25 1.25-1.25Z"/></svg>