Save as hereinafter otherwise provided there shall vest in the Custodian of Enemy Property for England appointed under the Trading with the Enemy Act, 1939,
(a) all Letters Patent for inventions belonging to or held or managed on behalf of any enemy, and
(b) the interest in all Letters Patent for inventions of any enemy who with any other person is the patentee, and
(c) the interest of any enemy in all Letters Patent for inventions in which the invention has been communicated to the patentee by an enemy.