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 August ZitzmannfiledCriticalAugust Zitzmann
Publication of CH72889ApublicationCriticalpatent/CH72889A/de
G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
G09F7/00—Signs, name or number plates, letters, numerals, or symbols; Panels or boards
G09F7/02—Signs, plates, panels or boards using readily-detachable elements bearing or forming symbols
G09F7/08—Signs, plates, panels or boards using readily-detachable elements bearing or forming symbols the elements being secured or adapted to be secured by means of grooves, rails, or slits
Landscapes
Physics & Mathematics
(AREA)
General Physics & Mathematics
(AREA)
Engineering & Computer Science
(AREA)
Theoretical Computer Science
(AREA)
CH72889A1919-08-121915-11-03Vorrichtung zur Überwachung von Fälligkeitstagen
CH72889A
(de)