NL7600804A
Expired / Lapsed
NL
⏱️ 0.0 years remaining
Writing material for repeated use, as bonded surface or loose sheet - of material from which ink can be removed by wiping with damp cloth
Assignee: Educa Products B V
•
Filing: 1976-01-27
•
Granted: —
•
Expires: 1996-01-27
Abstract
Abstract A re-usable writing surface is prepd. by covering an article with an opt. bonded layer of a material on which one can write with an ink which under dry conditions cannot, or can hardly, be wiped off the layer, but which can be wiped off by means of a moist cloth. The amt. of paper used, e.g. in offices, is reduced. The sheet material can be recycled after repeated use, and re-formed into fresh sheets.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
NL
Data Source
google_patents
Last Synchronized
2026-11-06 10:46
CPC Classifications
B; B43; B43L; B43L1/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.