Application Type
National Patents
Application SubType
National Patent
(10) Registration Number and Date
1936/000028 1938.05.02
Status
Invalidated
(180) Expiration Date
1956.12.18
(20) Filing Number and Date
BW P/1936/000028 1936.12.18
(40) Publication Number and Date
(86) PCT Filing Number and Date
(87) PCT Publication Number and Date
(85) National Entry Date
(30) Priority Details
(51) IPC Classes
(72) Inventor
(74) Representative Name
(54) Title
(EN) IMPROVEMENTS IN OR RELATING TO PROCESSES AND APPARATUS FOR THE EXTRACTION OF CELLULOSIC FIBRES FROM WOOD AND OTHER HIGHLY LIGNIFIED MATERIAL
(57) Abstract
(58) Citations
Document Type Date Action
Event NameDateStatus
Filing1936.12.18Filed
Registration1938.05.02Registered
Invalidation1956.12.18Invalidated