USD338929S - Mathematical teaching block - Google Patents
Mathematical teaching block Download PDFInfo
- Publication number
- USD338929S USD338929S US07/539,056 US53905690F USD338929S US D338929 S USD338929 S US D338929S US 53905690 F US53905690 F US 53905690F US D338929 S USD338929 S US D338929S
- Authority
- US
- United States
- Prior art keywords
- mathematical teaching
- teaching block
- block
- mathematical
- view
- 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 - Lifetime
Links
Images
Description
FIG. 1 is a plan view of a mathematical teaching block showing my new design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a right side elevational view thereof, the left side elevational being a mirror image;
FIG. 4 is a rear elevational view thereof;
FIG. 5 is a bottom plan view thereof; and,
FIG. 6 is a sectional view thereof along the lines 6--6 in FIG. 4.
Claims (1)
- The ornamental design for a mathematical teaching block, as shown and described.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2003390 | 1989-12-18 | ||
| GB2003390 | 1989-12-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| USD338929S true USD338929S (en) | 1993-08-31 |
Family
ID=70613498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US07/539,056 Expired - Lifetime USD338929S (en) | 1989-12-18 | 1990-06-15 | Mathematical teaching block |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | USD338929S (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USD415539S (en) | 1998-11-19 | 1999-10-19 | 90Degrees, Inc. | Toy-block with inclined rail extension |
| USD1096976S1 (en) * | 2023-05-26 | 2025-10-07 | Yaomin MA | Building block mounting component assembly |
| USD1104164S1 (en) * | 2023-08-21 | 2025-12-02 | Cheng-Hung YEN | Toy |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1216840A (en) | 1915-10-29 | 1917-02-20 | Embossing Company | Toy building-block. |
| US2093341A (en) | 1936-03-09 | 1937-09-14 | Robert A Reiche | Building block set |
| US3662486A (en) | 1970-02-04 | 1972-05-16 | Edward J Freedman | Polyhedral amusement and educational device |
| US4026065A (en) | 1975-01-06 | 1977-05-31 | Walter Dick | Polyhedral elements with undercut recesses and cylindrical connectors having collars |
| USD281183S (en) | 1983-05-09 | 1985-10-29 | Tomy Kogyo Company, Inc. | Toy construction piece |
| US4606732A (en) | 1984-06-15 | 1986-08-19 | Ronald Lyman | Interlocking toy building blocks with interconnecting, releasable hinges |
| US5000713A (en) | 1989-08-23 | 1991-03-19 | Cheng Ming H | Combinable toy blocks |
-
1990
- 1990-06-15 US US07/539,056 patent/USD338929S/en not_active Expired - Lifetime
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1216840A (en) | 1915-10-29 | 1917-02-20 | Embossing Company | Toy building-block. |
| US2093341A (en) | 1936-03-09 | 1937-09-14 | Robert A Reiche | Building block set |
| US3662486A (en) | 1970-02-04 | 1972-05-16 | Edward J Freedman | Polyhedral amusement and educational device |
| US4026065A (en) | 1975-01-06 | 1977-05-31 | Walter Dick | Polyhedral elements with undercut recesses and cylindrical connectors having collars |
| USD281183S (en) | 1983-05-09 | 1985-10-29 | Tomy Kogyo Company, Inc. | Toy construction piece |
| US4606732A (en) | 1984-06-15 | 1986-08-19 | Ronald Lyman | Interlocking toy building blocks with interconnecting, releasable hinges |
| US5000713A (en) | 1989-08-23 | 1991-03-19 | Cheng Ming H | Combinable toy blocks |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USD415539S (en) | 1998-11-19 | 1999-10-19 | 90Degrees, Inc. | Toy-block with inclined rail extension |
| USD1096976S1 (en) * | 2023-05-26 | 2025-10-07 | Yaomin MA | Building block mounting component assembly |
| USD1104164S1 (en) * | 2023-08-21 | 2025-12-02 | Cheng-Hung YEN | Toy |
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