KR880015344U - 9주 주판 - Google Patents
9주 주판Info
- Publication number
- KR880015344U KR880015344U KR2019870000345U KR870000345U KR880015344U KR 880015344 U KR880015344 U KR 880015344U KR 2019870000345 U KR2019870000345 U KR 2019870000345U KR 870000345 U KR870000345 U KR 870000345U KR 880015344 U KR880015344 U KR 880015344U
- Authority
- KR
- South Korea
- Prior art keywords
- abacus
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06C—DIGITAL COMPUTERS IN WHICH ALL THE COMPUTATION IS EFFECTED MECHANICALLY
- G06C1/00—Computing aids in which the computing members form at least part of the displayed result and are manipulated directly by hand, e.g. abacuses or pocket adding devices
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Mathematical Physics (AREA)
- Computer Hardware Design (AREA)
- Computing Systems (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- User Interface Of Digital Computer (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR2019870000345U KR890009061Y1 (ko) | 1987-01-14 | 1987-01-14 | 9주(珠) 주판 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR2019870000345U KR890009061Y1 (ko) | 1987-01-14 | 1987-01-14 | 9주(珠) 주판 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR880015344U true KR880015344U (ko) | 1988-09-15 |
KR890009061Y1 KR890009061Y1 (ko) | 1989-12-15 |
Family
ID=19259006
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR2019870000345U KR890009061Y1 (ko) | 1987-01-14 | 1987-01-14 | 9주(珠) 주판 |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR890009061Y1 (ko) |
-
1987
- 1987-01-14 KR KR2019870000345U patent/KR890009061Y1/ko active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
KR890009061Y1 (ko) | 1989-12-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
A201 | Request for examination | ||
E902 | Notification of reason for refusal | ||
E701 | Decision to grant or registration of patent right | ||
NORF | Unpaid initial registration fee |