SE355885B - - Google Patents
Info
- Publication number
- SE355885B SE355885B SE09929/69A SE992969A SE355885B SE 355885 B SE355885 B SE 355885B SE 09929/69 A SE09929/69 A SE 09929/69A SE 992969 A SE992969 A SE 992969A SE 355885 B SE355885 B SE 355885B
- Authority
- SE
- Sweden
Links
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B19/00—Teaching not covered by other main groups of this subclass
- G09B19/02—Counting; Calculating
Landscapes
- Business, Economics & Management (AREA)
- Engineering & Computer Science (AREA)
- Entrepreneurship & Innovation (AREA)
- Physics & Mathematics (AREA)
- Educational Administration (AREA)
- Educational Technology (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Toys (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19681772896 DE1772896B2 (de) | 1968-07-17 | 1968-07-17 | Lern- und Spielgerät zur Veranschaulichung von Rechenvorgängen |
| DE19681803134 DE1803134A1 (de) | 1968-10-15 | 1968-10-15 | Lernrechenmaschine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SE355885B true SE355885B (xx) | 1973-05-07 |
Family
ID=25755625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE09929/69A SE355885B (xx) | 1968-07-17 | 1969-07-14 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US3645440A (xx) |
| AT (1) | AT307090B (xx) |
| CH (1) | CH517982A (xx) |
| FR (1) | FR2013119A1 (xx) |
| GB (1) | GB1274037A (xx) |
| SE (1) | SE355885B (xx) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0125836A3 (en) * | 1983-05-06 | 1986-07-02 | O'Malley, Arthur Robert | Teaching aid |
| WO2012017397A2 (de) * | 2010-08-03 | 2012-02-09 | Its Mediaservice Gmbh | Zählboard |
| CN107293192A (zh) * | 2017-06-02 | 2017-10-24 | 陈晓纪 | 用于数学思维训练的数学教具 |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2575866A (en) * | 1951-11-20 | Calculating machine | ||
| US1347014A (en) * | 1920-07-20 | Time-computing apparatus | ||
| US939222A (en) * | 1906-01-04 | 1909-11-09 | John M Daly | Tonnage-equating machine. |
| US939479A (en) * | 1907-04-10 | 1909-11-09 | John M Daly | Computing-machine. |
| US1214262A (en) * | 1914-09-12 | 1917-01-30 | Caesar R Bannihr | Computing device. |
| US2549248A (en) * | 1949-05-14 | 1951-04-17 | William H Scott | Game scoring device |
| US3160345A (en) * | 1960-04-22 | 1964-12-08 | Edward C Walsh | Manual calculator having multiple rotary inputs |
| US3507447A (en) * | 1968-08-05 | 1970-04-21 | Edward C Walsh | Adding machine adapted to be held in one hand |
-
1969
- 1969-06-27 AT AT616869A patent/AT307090B/de not_active IP Right Cessation
- 1969-07-14 SE SE09929/69A patent/SE355885B/xx unknown
- 1969-07-15 US US841752A patent/US3645440A/en not_active Expired - Lifetime
- 1969-07-16 CH CH1083869A patent/CH517982A/de not_active IP Right Cessation
- 1969-07-16 FR FR6924193A patent/FR2013119A1/fr not_active Withdrawn
- 1969-07-16 GB GB35792/69A patent/GB1274037A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CH517982A (de) | 1972-01-15 |
| AT307090B (de) | 1973-05-10 |
| GB1274037A (en) | 1972-05-10 |
| FR2013119A1 (xx) | 1970-03-27 |
| US3645440A (en) | 1972-02-29 |