CA697382A - Blackboard mobile parallel rule - Google Patents
Blackboard mobile parallel ruleInfo
- Publication number
- CA697382A CA697382A CA697382A CA697382DA CA697382A CA 697382 A CA697382 A CA 697382A CA 697382 A CA697382 A CA 697382A CA 697382D A CA697382D A CA 697382DA CA 697382 A CA697382 A CA 697382A
- Authority
- CA
- Canada
- Prior art keywords
- parallel rule
- mobile parallel
- blackboard
- blackboard mobile
- rule
- 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
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA697382T |
Publications (1)
Publication Number | Publication Date |
---|---|
CA697382A true CA697382A (en) | 1964-11-10 |
Family
ID=36007647
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA697382A Expired CA697382A (en) | Blackboard mobile parallel rule |
Country Status (1)
Country | Link |
---|---|
CA (1) | CA697382A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3751809A (en) * | 1971-05-06 | 1973-08-14 | W Burgess | Portable drafting apparatus |
-
0
- CA CA697382A patent/CA697382A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3751809A (en) * | 1971-05-06 | 1973-08-14 | W Burgess | Portable drafting apparatus |
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