FR2057737A5 - - Google Patents
Info
- Publication number
- FR2057737A5 FR2057737A5 FR7025450A FR7025450A FR2057737A5 FR 2057737 A5 FR2057737 A5 FR 2057737A5 FR 7025450 A FR7025450 A FR 7025450A FR 7025450 A FR7025450 A FR 7025450A FR 2057737 A5 FR2057737 A5 FR 2057737A5
- Authority
- FR
- France
- 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
- B43L13/00—Drawing instruments, or writing or drawing appliances or accessories not otherwise provided for
- B43L13/14—Devices for drawing in perspective
- B43L13/141—Two-dimensional devices
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE735921 | 1969-07-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2057737A5 true FR2057737A5 (cs) | 1971-05-21 |
Family
ID=3855045
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7025450A Expired FR2057737A5 (cs) | 1969-07-10 | 1970-07-09 |
Country Status (4)
Country | Link |
---|---|
BE (1) | BE735921A (cs) |
DE (1) | DE2034051A1 (cs) |
FR (1) | FR2057737A5 (cs) |
GB (1) | GB1311912A (cs) |
-
1969
- 1969-07-10 BE BE735921D patent/BE735921A/xx unknown
-
1970
- 1970-07-08 GB GB3306570A patent/GB1311912A/en not_active Expired
- 1970-07-09 DE DE19702034051 patent/DE2034051A1/de active Pending
- 1970-07-09 FR FR7025450A patent/FR2057737A5/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
BE735921A (cs) | 1969-12-16 |
DE2034051A1 (de) | 1971-01-14 |
GB1311912A (en) | 1973-03-28 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |