FR2722142B1 - CONCAVE SURFACE WRITING BOARD - Google Patents
CONCAVE SURFACE WRITING BOARDInfo
- Publication number
- FR2722142B1 FR2722142B1 FR9408560A FR9408560A FR2722142B1 FR 2722142 B1 FR2722142 B1 FR 2722142B1 FR 9408560 A FR9408560 A FR 9408560A FR 9408560 A FR9408560 A FR 9408560A FR 2722142 B1 FR2722142 B1 FR 2722142B1
- Authority
- FR
- France
- Prior art keywords
- concave surface
- writing board
- surface writing
- board
- concave
- 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 - Fee Related
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
- B43L1/06—Blackboards rigid
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9408560A FR2722142B1 (en) | 1994-07-11 | 1994-07-11 | CONCAVE SURFACE WRITING BOARD |
EP95401663A EP0692392A1 (en) | 1994-07-11 | 1995-07-10 | Concave surface writing board |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9408560A FR2722142B1 (en) | 1994-07-11 | 1994-07-11 | CONCAVE SURFACE WRITING BOARD |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2722142A1 FR2722142A1 (en) | 1996-01-12 |
FR2722142B1 true FR2722142B1 (en) | 1996-08-23 |
Family
ID=9465235
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR9408560A Expired - Fee Related FR2722142B1 (en) | 1994-07-11 | 1994-07-11 | CONCAVE SURFACE WRITING BOARD |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0692392A1 (en) |
FR (1) | FR2722142B1 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE29809398U1 (en) | 1998-05-14 | 1999-09-23 | Walter Hebel GmbH & Co, 57548 Kirchen | Blackboard with curved surface |
DE29910701U1 (en) * | 1999-06-18 | 2000-11-23 | Walter Hebel GmbH & Co, 57548 Kirchen | Flipchart stand |
KR100800178B1 (en) * | 2007-06-15 | 2008-02-01 | 김민자 | Curvature adjust blackboard |
CN105363818B (en) * | 2015-10-29 | 2017-09-08 | 重庆盛镁镁业有限公司 | The aluminium alloy extruded board mold of adjustable curved surface inner corner trim |
CN105333293B (en) * | 2015-10-29 | 2018-02-09 | 重庆盛镁镁业有限公司 | The aluminium alloy extruded plate of adjustable curved surface inner corner trim |
CN105290139B (en) * | 2015-10-29 | 2017-09-08 | 重庆盛镁镁业有限公司 | The aluminium alloy extruded board mold of adjustable external corner curved surface |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1827389A (en) * | 1931-05-22 | 1931-10-13 | American Seating Co | Metal blackboard sheet |
US2838853A (en) * | 1956-07-03 | 1958-06-17 | Rohm & Haas | Chalkboard having curved writing surface |
US3336682A (en) * | 1965-04-21 | 1967-08-22 | Child Guidance Toys Inc | Educational chalk board |
-
1994
- 1994-07-11 FR FR9408560A patent/FR2722142B1/en not_active Expired - Fee Related
-
1995
- 1995-07-10 EP EP95401663A patent/EP0692392A1/en not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
EP0692392A1 (en) | 1996-01-17 |
FR2722142A1 (en) | 1996-01-12 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |