456
THE HONGKONG GOVERNMENT GAZETTE, DECEMBER 10, 1920.
No. 603. It is hereby notified that the following Letters Patent- have been granted :--
Number.
Date of Grant.
Name of Grantee.
Address of Grantee.
No. 25 of 1920.
7th December, 1920.
Marcoui's Wireless Tele- Marconi House,
graph Co., Ltd., Elec- Strand, London, England.j trical Engineers.
9th December, 1920.
Description of Invention.
An invention for improve- ments in the employ- ment of thermionic devices for maguifica- tion purposes.
C. D. MELBOURNE,
Registrar of Patents.
i