CH545995A - - Google Patents

Info

Publication number: CH545995A
Authority: CH; Switzerland

Application number

CH1804071A

Priority date (The priority date 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 date listed.)

1970-12-11

Filing date

1971-12-11

Publication date

1974-02-15

1971-12-11 Application filed filed Critical

1974-02-15 Publication of CH545995A publication Critical patent/CH545995A/xx

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)

CH1804071A 1970-12-11 1971-12-11 CH545995A (ro)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US9715770A	1970-12-11	1970-12-11

Publications (1)

Publication Number	Publication Date
CH545995A true CH545995A (ro)	1974-02-15

Family

ID=22261570

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CH1804071A CH545995A (ro)	1970-12-11	1971-12-11

Country Status (2)

Country	Link
US (1)	US3672072A (ro)
CH (1)	CH545995A (ro)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR2492137A1 (fr) *	1980-10-10	1982-04-16	Quenneville Yves	Table d'operations arithmetiques pour les enfants avec apparition et disparition du resultat
US5421732A (en) *	1994-07-18	1995-06-06	Taylor; Raymond R.	Apparatus and method for teaching addition and subtraction
US6375468B1 (en)	2000-07-24	2002-04-23	Kalyani Sundararajan	Educational tool
USD892930S1 (en) *	2019-02-15	2020-08-11	Henry David Archbold	Mathematics educational aid
USD994785S1 (en) *	2021-07-20	2023-08-08	Shaun Gibbons	Mathematical education toy
USD967262S1 (en) *	2021-08-25	2022-10-18	Rebecca Hadley	Educational poster
USD969211S1 (en) *	2021-08-25	2022-11-08	Rebecca Hadley	Educational poster
USD1029121S1 (en) *	2021-11-03	2024-05-28	Duncan Milne	Poppable addition silicone board

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3352487A (en) *		1967-11-14		Visual chart reader
US1233544A (en) *	1916-02-12	1917-07-17	Glenn O Bissey	Educational device.
US1714106A (en) *	1927-06-07	1929-05-21	Ropke Christian	Counting frame
CH388669A (it) *	1961-06-28	1965-02-28	Campanella Giulio	Strumento didattico per l'insegnamento dei primi elementi dell'aritmetica

1970
- 1970-12-11 US US97157A patent/US3672072A/en not_active Expired - Lifetime
1971
- 1971-12-11 CH CH1804071A patent/CH545995A/xx not_active IP Right Cessation

Also Published As

Publication number	Publication date
US3672072A (en)	1972-06-27

Publication	Publication Date	Title
ATA96471A (ro)	1973-02-15
AU1146470A (ro)	1971-08-19
AU2044470A (ro)	1972-03-30
AU1473870A (ro)	1971-11-11
AU1326870A (ro)	1971-10-28
AU2130570A (ro)	1972-04-27
AU2085370A (ro)	1972-04-13
AU2017870A (ro)	1972-03-23
AU1833270A (ro)	1972-02-10
AU1716970A (ro)	1972-01-06
AU1517670A (ro)	1971-11-18
AU1336970A (ro)	1971-10-07
AU1591370A (ro)	1971-12-09
AU1841070A (ro)	1972-02-10
AU2144270A (ro)	1972-04-27
AU2131570A (ro)	1972-04-27
AU2130770A (ro)	1972-04-27
AU1328670A (ro)	1971-10-07
AU1277070A (ro)	1971-09-23
AU1343870A (ro)	1971-10-07
AU1247570A (ro)	1971-09-16
AU2061170A (ro)	1972-04-13
AU1235770A (ro)	1971-09-16
AU1581370A (ro)	1971-12-09
AU1189670A (ro)	1971-02-18

Legal Events

Date	Code	Title	Description
1976-07-15	PL	Patent ceased