FR516013A - Improvements in drawing instruments - Google Patents
Improvements in drawing instrumentsInfo
- Publication number
- FR516013A FR516013A FR516013A FR516013DA FR516013A FR 516013 A FR516013 A FR 516013A FR 516013 A FR516013 A FR 516013A FR 516013D A FR516013D A FR 516013DA FR 516013 A FR516013 A FR 516013A
- Authority
- FR
- France
- Prior art keywords
- drawing instruments
- instruments
- 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
- B43L13/00—Drawing instruments, or writing or drawing appliances or accessories not otherwise provided for
- B43L13/02—Draughting machines or drawing devices for keeping parallelism
- B43L13/04—Guides for rulers
- B43L13/06—Guides for rulers with pivoted guide rods
-
- 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
- B43L13/02—Draughting machines or drawing devices for keeping parallelism
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH82798T | 1919-04-16 | ||
CH83799T | 1919-04-16 | ||
GB10531/20A GB152932A (en) | 1919-04-16 | 1920-04-15 | Improvements in or relating to drawing apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
FR516013A true FR516013A (en) | 1921-04-12 |
Family
ID=9969535
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR516013A Expired FR516013A (en) | 1919-04-16 | 1920-05-26 | Improvements in drawing instruments |
Country Status (3)
Country | Link |
---|---|
CH (2) | CH82798A (en) |
FR (1) | FR516013A (en) |
GB (1) | GB152932A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3950853A (en) * | 1975-02-12 | 1976-04-20 | Andrew William H | Track type drafting machine |
-
1919
- 1919-02-01 CH CH82798A patent/CH82798A/en unknown
- 1919-04-16 CH CH83799A patent/CH83799A/en unknown
-
1920
- 1920-04-15 GB GB10531/20A patent/GB152932A/en not_active Expired
- 1920-05-26 FR FR516013A patent/FR516013A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
CH82798A (en) | 1920-04-01 |
CH83799A (en) | 1920-05-17 |
GB152932A (en) | 1920-10-28 |
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