FR387282A - Tableau en verre pour l'enseignement, présentant des bandes transparentes et opaques alternées - Google Patents
Tableau en verre pour l'enseignement, présentant des bandes transparentes et opaques alternéesInfo
- Publication number
- FR387282A FR387282A FR387282A FR387282DA FR387282A FR 387282 A FR387282 A FR 387282A FR 387282 A FR387282 A FR 387282A FR 387282D A FR387282D A FR 387282DA FR 387282 A FR387282 A FR 387282A
- Authority
- FR
- France
- Prior art keywords
- education
- glass board
- alternating transparent
- opaque bands
- opaque
- 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
- B43L1/12—Repeatedly-usable boards or tablets for writing or drawing having translucent writing surfaces producing visual impressions by co-operation with backing members
- B43L1/123—Flexible writing surface or backing
- B43L1/126—Flexible writing surface or backing withinterposed adhesive substances
-
- 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
- B43L1/12—Repeatedly-usable boards or tablets for writing or drawing having translucent writing surfaces producing visual impressions by co-operation with backing members
- B43L1/123—Flexible writing surface or backing
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE193553T |
Publications (1)
Publication Number | Publication Date |
---|---|
FR387282A true FR387282A (fr) | 1908-07-06 |
Family
ID=5739669
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR387282A Expired FR387282A (fr) | 1908-02-17 | Tableau en verre pour l'enseignement, présentant des bandes transparentes et opaques alternées |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE193553C (enrdf_load_stackoverflow) |
FR (1) | FR387282A (enrdf_load_stackoverflow) |
-
1907
- 1907-03-25 DE DE1907193553D patent/DE193553C/de not_active Expired - Lifetime
-
1908
- 1908-02-17 FR FR387282A patent/FR387282A/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE193553C (enrdf_load_stackoverflow) |
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