AT173876B - Arithmetic aid device - Google Patents
Arithmetic aid deviceInfo
- Publication number
- AT173876B AT173876B AT173876DA AT173876B AT 173876 B AT173876 B AT 173876B AT 173876D A AT173876D A AT 173876DA AT 173876 B AT173876 B AT 173876B
- Authority
- AT
- Austria
- Prior art keywords
- arithmetic
- aid device
- aid
- arithmetic aid
- Prior art date
Links
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT173876T | 1950-03-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
AT173876B true AT173876B (en) | 1953-02-10 |
Family
ID=3657563
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT173876D AT173876B (en) | 1950-03-14 | 1950-03-14 | Arithmetic aid device |
Country Status (1)
Country | Link |
---|---|
AT (1) | AT173876B (en) |
-
1950
- 1950-03-14 AT AT173876D patent/AT173876B/en active
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