AIRCRAFT TRANSPARENCY WITH PRESSURE SEAL AND/OR ANTI-STATIC DRAIN
AIRTIGHT HOLDING MECHANISM AND POSITION DETECTION DEVICE FOR STAND
BEARING DEVICE AND ELECTRICALLY DRIVEN PERPENDICULAR TAKE-OFF/LANDING MACHINE
BEARING DEVICE AND ELECTRIC VERTICAL TAKE-OFF AND LANDING CRAFT
BEARING DEVICE AND ELECTRIC VERTICAL TAKING OFF/LANDING DEVICE