GB1237269A - Wall panel that can be written on with chalk - Google Patents
Wall panel that can be written on with chalkInfo
- Publication number
- GB1237269A GB1237269A GB4853168A GB4853168A GB1237269A GB 1237269 A GB1237269 A GB 1237269A GB 4853168 A GB4853168 A GB 4853168A GB 4853168 A GB4853168 A GB 4853168A GB 1237269 A GB1237269 A GB 1237269A
- Authority
- GB
- United Kingdom
- Prior art keywords
- projections
- chalk
- written
- wall panel
- oct
- Prior art date
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- 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
- B43L1/04—Blackboards
- B43L1/10—Writing surfaces thereof
Landscapes
- Drawing Aids And Blackboards (AREA)
- Laminated Bodies (AREA)
- Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
Abstract
1,237,269. Blackboards. DR. KURT HERBERTS & CO. 14 Oct., 1968 [31 Oct., 1967], No. 48531/68. Heading B6P. A wall panel that can be written on with chalk or similar writing material so that it can be used as a blackboard consists of a plastic laminate with an irregular mat surface in the form of projections and hollows, every 3rd to 8th projection projecting from 20 to 80% and preferably 30 to 40% beyond the average height of the other projections. Further the difference between the greatest height of the projections and lowest depth of the hollows forming the surface is from 5 to 20 Á and preferably 10 Á. The surface is prepared by compressing the laminate with a plate having a surface which is a negative of the required surface.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1967H0060673 DE1978995U (en) | 1967-10-31 | 1967-10-31 | WALL PANEL. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1237269A true GB1237269A (en) | 1971-06-30 |
Family
ID=7161073
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4853168A Expired GB1237269A (en) | 1967-10-31 | 1968-10-14 | Wall panel that can be written on with chalk |
Country Status (8)
| Country | Link |
|---|---|
| AT (1) | AT283951B (en) |
| BE (1) | BE723110A (en) |
| DE (1) | DE1978995U (en) |
| ES (2) | ES357943A1 (en) |
| FR (1) | FR1585302A (en) |
| GB (1) | GB1237269A (en) |
| NL (1) | NL6813338A (en) |
| SE (1) | SE341596B (en) |
-
1967
- 1967-10-31 DE DE1967H0060673 patent/DE1978995U/en not_active Expired
-
1968
- 1968-09-06 SE SE1202068A patent/SE341596B/xx unknown
- 1968-09-07 ES ES357943A patent/ES357943A1/en not_active Expired
- 1968-09-07 ES ES1968141408U patent/ES141408Y/en not_active Expired
- 1968-09-18 NL NL6813338A patent/NL6813338A/xx unknown
- 1968-10-14 GB GB4853168A patent/GB1237269A/en not_active Expired
- 1968-10-18 AT AT1020968A patent/AT283951B/en not_active IP Right Cessation
- 1968-10-30 BE BE723110D patent/BE723110A/xx unknown
-
1969
- 1969-10-02 FR FR1585302D patent/FR1585302A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| BE723110A (en) | 1969-04-01 |
| FR1585302A (en) | 1970-01-16 |
| SE341596B (en) | 1972-01-10 |
| NL6813338A (en) | 1969-05-02 |
| ES357943A1 (en) | 1970-04-01 |
| AT283951B (en) | 1970-08-25 |
| DE1978995U (en) | 1968-02-15 |
| ES141408Y (en) | 1970-10-01 |
| ES141408U (en) | 1969-01-16 |
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