Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB2073531A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JOSEF HEIMBACH
Original Assignee
JOSEF HEIMBACH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by JOSEF HEIMBACHfiledCriticalJOSEF HEIMBACH
Priority to GB2073531ApriorityCriticalpatent/GB369116A/en
Publication of GB369116ApublicationCriticalpatent/GB369116A/en
B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
B43L1/00—Repeatedly-usable boards or tablets for writing or drawing
Landscapes
Medicinal Preparation
(AREA)
Abstract
369,116. Writing tablets. HEIMBACH, J., 89A, T³rkenstrasse, Munich, Germany. July 20, 1931, No. 20735. [Class 146 (ii).] White tablets for writing upon with pencil; and such that the writing can be erased by wiping with a damp sponge, are formed by painting an unbreakable support with a composition made by dissolving gelatine, chloral hydrate, magnesium sulphate, and magnesium fluoride in hot water and then adding lithopone.
GB2073531A1931-07-201931-07-20Method for the production of white tablets for writing
ExpiredGB369116A
(en)