JPS4944606B1 - - Google Patents
Info
- Publication number
- JPS4944606B1 JPS4944606B1 JP43059573A JP5957368A JPS4944606B1 JP S4944606 B1 JPS4944606 B1 JP S4944606B1 JP 43059573 A JP43059573 A JP 43059573A JP 5957368 A JP5957368 A JP 5957368A JP S4944606 B1 JPS4944606 B1 JP S4944606B1
- Authority
- JP
- Japan
- 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.)
- Pending
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
- B43L13/142—T-squares
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US66270467A | 1967-08-23 | 1967-08-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS4944606B1 true JPS4944606B1 (en) | 1974-11-29 |
Family
ID=24658841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP43059573A Pending JPS4944606B1 (en) | 1967-08-23 | 1968-08-22 |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPS4944606B1 (en) |
| DE (1) | DE1786130A1 (en) |
| GB (1) | GB1241342A (en) |
| NL (1) | NL6812017A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2132562A (en) * | 1982-09-04 | 1984-07-11 | Humphrey Vincent Needle | Perspective drawing board |
| GB2143779B (en) * | 1983-07-25 | 1986-11-19 | Lambda Integral Design Limited | Improvements in drawing boards |
-
1968
- 1968-08-16 GB GB3942268A patent/GB1241342A/en not_active Expired
- 1968-08-22 NL NL6812017A patent/NL6812017A/xx unknown
- 1968-08-22 JP JP43059573A patent/JPS4944606B1/ja active Pending
- 1968-08-22 DE DE19681786130 patent/DE1786130A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE1786130A1 (en) | 1971-11-25 |
| GB1241342A (en) | 1971-08-04 |
| NL6812017A (en) | 1969-02-25 |