CA2003371A1 - Toy building unit - Google Patents
Toy building unitInfo
- Publication number
- CA2003371A1 CA2003371A1 CA 2003371 CA2003371A CA2003371A1 CA 2003371 A1 CA2003371 A1 CA 2003371A1 CA 2003371 CA2003371 CA 2003371 CA 2003371 A CA2003371 A CA 2003371A CA 2003371 A1 CA2003371 A1 CA 2003371A1
- Authority
- CA
- Canada
- Prior art keywords
- units
- intruding
- cube
- octahedron
- corners
- 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.)
- Abandoned
Links
Landscapes
- Toys (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A building unit for interconnecting with other similar building units to create a structure such as a toy or a puzzle.
The building unit has the form of an octahedron with a cube corner intruding into the body of the octahedron or projecting therefrom in place of each of predetermined faces of the octahedron. A
protruding cube corner of the unit mateably fits into an intruding cube corner of a similar unit and an intruding cube corner of the unit mateably receives a projecting cube corner of a similar unit.
A building unit for interconnecting with other similar building units to create a structure such as a toy or a puzzle.
The building unit has the form of an octahedron with a cube corner intruding into the body of the octahedron or projecting therefrom in place of each of predetermined faces of the octahedron. A
protruding cube corner of the unit mateably fits into an intruding cube corner of a similar unit and an intruding cube corner of the unit mateably receives a projecting cube corner of a similar unit.
Description
200337~
FIELD OF THE INVBNTION
The present invention relates to a building unit for interconnecting with other similar buildi.ng units to create a structure such as a toy or a puzzle. In a larger form, the 5building unit of the present invention may be used to construct larger objects having a wide variety of applications and uses.
BACKGROUND OF T~E INVENTION
Interconnecting building units to create a structure are well-known for educational and entertainment purposes, particularly 10for children. Thus, for example, interconnecting rectangular or cube like forms of rubber or plastic, with mating projections and indentations on opposing pieces, for creating toy buildings have been successfully marketed for many years.
Building units of other than rectangular or cube like 15form are not as well-known. Puzzles, comprising geometric shapes such as tetrahedra, on which one unit is rotateably connected to another, have been developed as puzzles and amusement devices in recqnt years,jas eviden~ed,,for example, in Mitchell U.S. Patent No. 4,461,480 issued July 24, 1984, Gustafson U.S. Patent No.
204,474,376 issued October 2, 1984, and Sherman. Jr. U.S. Patent No.
4,478,418 issued October 23, 1984.
It is an object of the present invention to provide a novel form of building unit for interconnecting with other similar building units to create a structure, which building unit may be ~ -,-; ~ :-'.
2003371.
used, for example, as an element of a toy or puzzle, or for creating larger functional or decorative structures.
In accordance with the present invention a building unit for interconnecting with other similar building units to create a structure is provided. The building unit has the form of an octahedron with a cube corner intruding into the body of the octahedron or projecting therefrom in place of each of ~ ?
predetermined faces of the octahedron. A protruding cube corner of the unit mateably fits into an intruding cube corner of a similar unit and an intruding cube corner of the unit mateably receives a pro;ecting cube corner of a similar unit.
In a preferred embodiment of the present invention, the - building unit is of small size, to serve as a building toy, wherein each face of the octahedron except one has either a protruding cube corner or an~intrudlng cube corner taking its place. A puzzle is formed ùsing such a unit in combination with nineteen other similar octahedron units. The units must have a cumulative total of thirty - intruding icube corne~s Iwhereb!y!the units, when properly fittedtogether, form a body of spherical appearance, with the regular octahedron face on the exterior. ~ ~-To form suoh a body of spherical appearance, the edges and adjacent surfaces of the regular octahedron face are somewhat ~ distorted`~downwardly, out of the plane of the face towards the `.`~2~5 ~ corners~by a small angle so as to produce, in combination with .. .
other similar octahedron units, when properly fitted together, a body of spherical appearance.
The building unit and puzzle in accordance with the ;
present invention forms the basis of interesting and educational ~ ~-three-dimensional toys. By appropriately marking the external :
surface of the body, to produce a particular object's appearance when the units are in their properly fitted, spherical form, an entertaining puzzle may be provided. Thus, for example, the completed puzzle may be in the form of a baseball, with the curved, linear stitching of a baseball being simulated on the exterior surface of the completed spherical body.
..... . ~
' .'': .':"~
These and other objects and advantages of the invention will become apparent upon reading the following detailed 15description and upon referring to the drawings in which:
FIGURE 1 is a schematic, perspective view of a building unit in accordance with the present invention;
FIGURE 2 is a perspective, schematic view of an alternative form of building unit in accordance with the present 20invention;
~ FIGURE 3 is a perspective view of a number of units in - accordance with the present invention fitted together to form a .. .. ..
body of spherical appearance, encased in a transparent spherical holder;
25FIGURE 4 is a perspective view of a pair of units in , . - ;
~ : : : '.~. .
,'..' ' :' "
200337~
accordance with the present invention, fitted together; and FIGURE 5 is a perspective view of a number of units in an alternative embodiment of the present invention, such units being fitted together to form a body spherical appearance encased in a 5transparent spherical holder, as in the case of the embodiment of FIGURE 3.
While the invention will be described in conjunction with example embodiments, it will be understood that it is not intended to limit the invention to such embodiments. On the contrary, it is 10intended to cover all alternatives, modifications and equivalents as may be included within the spirit and scope of the invention as defined by the appended claims.
In the drawings, similar features have been given similar 15reference numerals.
Turning to FIGURES 1 and 2, there are illustrated building units 2 and 3, respectively, in accordance with the present invention, for interconnecting with other similar building units to create a structure ~ such as that illustrated in FIGURE 3.
20As can be seen in FIGURE 1, building unit 2 is formed from an octahedron 6 (in partial phantom), with a cube corner 8 taking up and projecting from each of the faces 10 of the octahedron. In the similar building unit 3 illustrated in FIGURE
.
~ 2, some of the faces 10 of the base octahedron 6 are replaced with ;~ :
25intruding cube corners 12. Intruding cube corners of a unit such ~
: :.,: .
as unit 3 mateably receive protruding cube corners 8 of similar building units, such as building unit 2, to permit construction of a structure.
Using this simple, but basic form of octahedral building unit, a variety of interconnecting building units may be formed, ranging from those, such as unit 2 illustrated in FIGURE 1, having eight protruding cube corners 8 and no intruding cube corners 12, :
to those which have only intruding cube corners 12 on each of their eight octahedron faces. Thus, for example some of the building units may have one, two, three, four, five, six or seven intruding cube corners 12 replacing their octahedron faces with some of the remaining face or faces being replaced with protruding cube corners 8. The num~er and form of such building units selected will vary, depending on the ultimate shape of structure 4 desired and the manner in which the building units 2 are intended to be interconnected.
In a preferred embodiment of the present invention, one of the faces 10 of the octahedron 6 is provided with neither a protruding cube corner 8 nor an intruding cube corner 12, so that this surface will become an outer surface of a spherical structure 4,~as~illustrated-in FIGyRE ~,~when other similar building units 2, each with a similar exterior face 10, are properly interconnected.
In this embodiment, the octahedron face is formed with its edges and the ad~acent surfaces being distorted downwardly out of the plane of the face towards the corners by a small angle (e.g. about 7%) so that the final structure, when the units are properly interconnected with these faces of the units on the outside, will ,. ~ ~
, .: -;
Z00337~.
have a more spherical shape as illustrated in FIGURE 3. In this instance, the outer faces 10 may be distinctly and individually marked, for example with simulated stitching 14 of a baseball, to increase the skill and entertainment involved in properly interconnecting units 2 to make the final structure 4. A
transparent case 16, having releasably interfitting upper and lower sections 18 and 20 respectively, may be provided for both holding the finished baseball structure 4 and to facilitate the assembling of interconnecting units 2, as structure 4 is being built.
Additionally, because of the manner in which protruding cube corners 8 fit into intruding cube corners of adjacent units, either a securing means such as adhesive, or friction-fitting, mating surfaces of the interfitting cube corners or the like, or an outer walled structure such as case 16, should be used to ensure that adjacent units 2, when interconnected, remain interconnected.
To form a spherical structure 4, as illustrated in FIGURE
3~ twenty units 2 having seven faces with protruding or intruding cube corners and one triangular face 10 (of the basic octahedron), are required. Of these twenty units 2, an example configuration to enable construction of a spherical structure 4 as illustrated in FIGURE 3 would requirR ten of~the units to have one intruding cube corner each and ten to have two intruding cube corners each, the remaining five and four faces respectively having projecting cube corners. An alternative configuration would have fifteen of the ; 25 units with one intruding cube corner each and five of the units with three intruding cube corners or any other combination adding up to thirty intruding corners.
. ..... , . .. . ~ . . " . .... , . ~ , .. . ..
200337~
To add another element of entertainment and challenge, protruding cube corners 8 on a building unit 2 or 3 may be each distinctly coloured. Since portions of coloured surfaces of cube corners 8 are visible in breaks between opposing edges 22 of adjacent of faces 10, when the spherical structure 4 is formed, cube corners may be coloured and the building units may be arranged so that similar colours appear along these breaks radiating from each corner 24 of faces 10. Thus, a similar colour would be visible in each of the breaks radiating from each corner 24 and a different colour would be provided for each of the corners 24, when the units of the puzzle have been properly interconnected.
In yet a further embodiment of the present invention, as illustrated in FIGURE 5, again a spherical structure 4 is formed, but this time each of twenty units 2 have the eighth face of the tetrahedron being provided with an intruding cube corner 12 instead of a regular triangular face 10. Otherwise the units are shaped as the units of FIGURE 3. In the embodiment of FIGURE 5, the faces of cube corners 8 are coloured with a particular colour, together with faces adjacent thereto, for example four different colours being ; 20 used for each unit 2. With the proper selection and positioning of colours on these protrudling,cube corners, a puzzle can be created ~ so that five adjacent cube corners form a similarly coloured - cluster 30 (for example, one such cluster 30 may be in the colour yellow, as indicated by the letters Y in this FIGURE) about a ~ ., - :.
~ 25 similarly coloured star 32 formed by the breaks between opposing ; -`~;
, .
;~ edgès of faces of adjacent cube corners in each cluster, and any cluster 30 adjacent thereto is of a different colour. There are : . ~
~: . :,: ,:
twelve different clusters 30 of such protruding cube corners 8 making up the entire spherical structure and it will be understood that similar puzzles can be formed using other combinations of colours as desired for the cube corners.
While the invention has been described with respect to toy building units producing a sphere, it will be understood that similar building units may be used, in appropriate numbers and having appropriate combinations of protruding cube corners 8 and intruding cube corners 12, to form different shapes of structures when appropriately interconnected. As well, larger versions of such building units may be provided so that, when they are securely interconnected by appropriate fastening means, they form functional and visually appealing structures, for example activity structures for children in playgrounds, artistic sculptures, etcetera. In this embodiment, the units would be secured together by any appropriate securing means.
Thus it is apparent that there has been provided in accordance with the invention a building unit for interconnecting with other similar building units to create a structure that fully satisfies the objects, aims and advantages set forth above. While the invent~ion has be~enl described in conjunction with specific embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art in light of the foregoing description. Accordingly, it is intended to embrace all such alternatives, modifications and `~ variations as fall within the spirit and broad scope of the invention.
FIELD OF THE INVBNTION
The present invention relates to a building unit for interconnecting with other similar buildi.ng units to create a structure such as a toy or a puzzle. In a larger form, the 5building unit of the present invention may be used to construct larger objects having a wide variety of applications and uses.
BACKGROUND OF T~E INVENTION
Interconnecting building units to create a structure are well-known for educational and entertainment purposes, particularly 10for children. Thus, for example, interconnecting rectangular or cube like forms of rubber or plastic, with mating projections and indentations on opposing pieces, for creating toy buildings have been successfully marketed for many years.
Building units of other than rectangular or cube like 15form are not as well-known. Puzzles, comprising geometric shapes such as tetrahedra, on which one unit is rotateably connected to another, have been developed as puzzles and amusement devices in recqnt years,jas eviden~ed,,for example, in Mitchell U.S. Patent No. 4,461,480 issued July 24, 1984, Gustafson U.S. Patent No.
204,474,376 issued October 2, 1984, and Sherman. Jr. U.S. Patent No.
4,478,418 issued October 23, 1984.
It is an object of the present invention to provide a novel form of building unit for interconnecting with other similar building units to create a structure, which building unit may be ~ -,-; ~ :-'.
2003371.
used, for example, as an element of a toy or puzzle, or for creating larger functional or decorative structures.
In accordance with the present invention a building unit for interconnecting with other similar building units to create a structure is provided. The building unit has the form of an octahedron with a cube corner intruding into the body of the octahedron or projecting therefrom in place of each of ~ ?
predetermined faces of the octahedron. A protruding cube corner of the unit mateably fits into an intruding cube corner of a similar unit and an intruding cube corner of the unit mateably receives a pro;ecting cube corner of a similar unit.
In a preferred embodiment of the present invention, the - building unit is of small size, to serve as a building toy, wherein each face of the octahedron except one has either a protruding cube corner or an~intrudlng cube corner taking its place. A puzzle is formed ùsing such a unit in combination with nineteen other similar octahedron units. The units must have a cumulative total of thirty - intruding icube corne~s Iwhereb!y!the units, when properly fittedtogether, form a body of spherical appearance, with the regular octahedron face on the exterior. ~ ~-To form suoh a body of spherical appearance, the edges and adjacent surfaces of the regular octahedron face are somewhat ~ distorted`~downwardly, out of the plane of the face towards the `.`~2~5 ~ corners~by a small angle so as to produce, in combination with .. .
other similar octahedron units, when properly fitted together, a body of spherical appearance.
The building unit and puzzle in accordance with the ;
present invention forms the basis of interesting and educational ~ ~-three-dimensional toys. By appropriately marking the external :
surface of the body, to produce a particular object's appearance when the units are in their properly fitted, spherical form, an entertaining puzzle may be provided. Thus, for example, the completed puzzle may be in the form of a baseball, with the curved, linear stitching of a baseball being simulated on the exterior surface of the completed spherical body.
..... . ~
' .'': .':"~
These and other objects and advantages of the invention will become apparent upon reading the following detailed 15description and upon referring to the drawings in which:
FIGURE 1 is a schematic, perspective view of a building unit in accordance with the present invention;
FIGURE 2 is a perspective, schematic view of an alternative form of building unit in accordance with the present 20invention;
~ FIGURE 3 is a perspective view of a number of units in - accordance with the present invention fitted together to form a .. .. ..
body of spherical appearance, encased in a transparent spherical holder;
25FIGURE 4 is a perspective view of a pair of units in , . - ;
~ : : : '.~. .
,'..' ' :' "
200337~
accordance with the present invention, fitted together; and FIGURE 5 is a perspective view of a number of units in an alternative embodiment of the present invention, such units being fitted together to form a body spherical appearance encased in a 5transparent spherical holder, as in the case of the embodiment of FIGURE 3.
While the invention will be described in conjunction with example embodiments, it will be understood that it is not intended to limit the invention to such embodiments. On the contrary, it is 10intended to cover all alternatives, modifications and equivalents as may be included within the spirit and scope of the invention as defined by the appended claims.
In the drawings, similar features have been given similar 15reference numerals.
Turning to FIGURES 1 and 2, there are illustrated building units 2 and 3, respectively, in accordance with the present invention, for interconnecting with other similar building units to create a structure ~ such as that illustrated in FIGURE 3.
20As can be seen in FIGURE 1, building unit 2 is formed from an octahedron 6 (in partial phantom), with a cube corner 8 taking up and projecting from each of the faces 10 of the octahedron. In the similar building unit 3 illustrated in FIGURE
.
~ 2, some of the faces 10 of the base octahedron 6 are replaced with ;~ :
25intruding cube corners 12. Intruding cube corners of a unit such ~
: :.,: .
as unit 3 mateably receive protruding cube corners 8 of similar building units, such as building unit 2, to permit construction of a structure.
Using this simple, but basic form of octahedral building unit, a variety of interconnecting building units may be formed, ranging from those, such as unit 2 illustrated in FIGURE 1, having eight protruding cube corners 8 and no intruding cube corners 12, :
to those which have only intruding cube corners 12 on each of their eight octahedron faces. Thus, for example some of the building units may have one, two, three, four, five, six or seven intruding cube corners 12 replacing their octahedron faces with some of the remaining face or faces being replaced with protruding cube corners 8. The num~er and form of such building units selected will vary, depending on the ultimate shape of structure 4 desired and the manner in which the building units 2 are intended to be interconnected.
In a preferred embodiment of the present invention, one of the faces 10 of the octahedron 6 is provided with neither a protruding cube corner 8 nor an intruding cube corner 12, so that this surface will become an outer surface of a spherical structure 4,~as~illustrated-in FIGyRE ~,~when other similar building units 2, each with a similar exterior face 10, are properly interconnected.
In this embodiment, the octahedron face is formed with its edges and the ad~acent surfaces being distorted downwardly out of the plane of the face towards the corners by a small angle (e.g. about 7%) so that the final structure, when the units are properly interconnected with these faces of the units on the outside, will ,. ~ ~
, .: -;
Z00337~.
have a more spherical shape as illustrated in FIGURE 3. In this instance, the outer faces 10 may be distinctly and individually marked, for example with simulated stitching 14 of a baseball, to increase the skill and entertainment involved in properly interconnecting units 2 to make the final structure 4. A
transparent case 16, having releasably interfitting upper and lower sections 18 and 20 respectively, may be provided for both holding the finished baseball structure 4 and to facilitate the assembling of interconnecting units 2, as structure 4 is being built.
Additionally, because of the manner in which protruding cube corners 8 fit into intruding cube corners of adjacent units, either a securing means such as adhesive, or friction-fitting, mating surfaces of the interfitting cube corners or the like, or an outer walled structure such as case 16, should be used to ensure that adjacent units 2, when interconnected, remain interconnected.
To form a spherical structure 4, as illustrated in FIGURE
3~ twenty units 2 having seven faces with protruding or intruding cube corners and one triangular face 10 (of the basic octahedron), are required. Of these twenty units 2, an example configuration to enable construction of a spherical structure 4 as illustrated in FIGURE 3 would requirR ten of~the units to have one intruding cube corner each and ten to have two intruding cube corners each, the remaining five and four faces respectively having projecting cube corners. An alternative configuration would have fifteen of the ; 25 units with one intruding cube corner each and five of the units with three intruding cube corners or any other combination adding up to thirty intruding corners.
. ..... , . .. . ~ . . " . .... , . ~ , .. . ..
200337~
To add another element of entertainment and challenge, protruding cube corners 8 on a building unit 2 or 3 may be each distinctly coloured. Since portions of coloured surfaces of cube corners 8 are visible in breaks between opposing edges 22 of adjacent of faces 10, when the spherical structure 4 is formed, cube corners may be coloured and the building units may be arranged so that similar colours appear along these breaks radiating from each corner 24 of faces 10. Thus, a similar colour would be visible in each of the breaks radiating from each corner 24 and a different colour would be provided for each of the corners 24, when the units of the puzzle have been properly interconnected.
In yet a further embodiment of the present invention, as illustrated in FIGURE 5, again a spherical structure 4 is formed, but this time each of twenty units 2 have the eighth face of the tetrahedron being provided with an intruding cube corner 12 instead of a regular triangular face 10. Otherwise the units are shaped as the units of FIGURE 3. In the embodiment of FIGURE 5, the faces of cube corners 8 are coloured with a particular colour, together with faces adjacent thereto, for example four different colours being ; 20 used for each unit 2. With the proper selection and positioning of colours on these protrudling,cube corners, a puzzle can be created ~ so that five adjacent cube corners form a similarly coloured - cluster 30 (for example, one such cluster 30 may be in the colour yellow, as indicated by the letters Y in this FIGURE) about a ~ ., - :.
~ 25 similarly coloured star 32 formed by the breaks between opposing ; -`~;
, .
;~ edgès of faces of adjacent cube corners in each cluster, and any cluster 30 adjacent thereto is of a different colour. There are : . ~
~: . :,: ,:
twelve different clusters 30 of such protruding cube corners 8 making up the entire spherical structure and it will be understood that similar puzzles can be formed using other combinations of colours as desired for the cube corners.
While the invention has been described with respect to toy building units producing a sphere, it will be understood that similar building units may be used, in appropriate numbers and having appropriate combinations of protruding cube corners 8 and intruding cube corners 12, to form different shapes of structures when appropriately interconnected. As well, larger versions of such building units may be provided so that, when they are securely interconnected by appropriate fastening means, they form functional and visually appealing structures, for example activity structures for children in playgrounds, artistic sculptures, etcetera. In this embodiment, the units would be secured together by any appropriate securing means.
Thus it is apparent that there has been provided in accordance with the invention a building unit for interconnecting with other similar building units to create a structure that fully satisfies the objects, aims and advantages set forth above. While the invent~ion has be~enl described in conjunction with specific embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art in light of the foregoing description. Accordingly, it is intended to embrace all such alternatives, modifications and `~ variations as fall within the spirit and broad scope of the invention.
Claims (14)
1. A building unit for interconnecting with other similar building units to create a structure, the building unit having the form of an octahedron with a cube corner intruding into the body of the octahedron or projecting therefrom in place of each of predetermined faces of the octahedron, a protruding cube corner of the unit to mateably fit into an intruding cube corner of a similar unit and an intruding cube corner of the unit to mateably receive a projecting cube corner of a similar unit.
2. A building unit according to claim 1 of small size to serve as a building toy.
3. A building unit according to claim 2 wherein each face of the octahedron is replaced with either a projecting cube corner or an intruding cube corner.
4. A building unit according to claim 2 wherein each face of the octahedron except one has either a protruding cube corner or an intruding cube corner taking the place of said faces of the octahedron.
5. A building unit according to claim 4 wherein the face of the octahedron is formed with its edges and the corresponding surfaces being distorted downwardly out of the plane of the face towards the corners by a small angle so as to produce, in combination with other similar octahedron units when properly fitted together, a body of spherical appearance.
6. A toy puzzle comprising a building unit according to claim 5, in combination with nineteen other similar octahedron units, the units having a cumulative total of thirty intruding cube corners whereby the units, when properly fitted together, form a body of spherical appearance.
7. A toy puzzle according to claim 6 wherein ten of the units each have two intruding cube corners and ten have three intruding cube corners.
8. A toy puzzle according to claim 6 wherein fifteen of the units each have one intruding cube corners and five of the units each have three intruding cube corners.
9. A toy puzzle according to claim 6 wherein each of the protruding cube corners of a building unit are in a different colour, and similar colours are used for cube corners on protruding cube corners on other octahedron units of the puzzle, whereby, when the units are properly fitted together to form a body of spherical appearance, portions of adjacent cube corners being visible from the exterior of the body will be of the same colour when the units are properly fitted together.
10. A toy puzzle according to claim 6 wherein the faces of the units which have no protruding or intruding cube corners and adjacent surfaces are marked with stitching to simulate, when the units are properly fitted together in spherical fashion, the linear, curved stitching of a baseball.
11. A toy puzzle according to claim 6 further comprising a transparent spherical casing within which the units may be interconnected and retained in completed form.
12. A toy puzzle comprising twenty building units according to claim 3, the units having a cumulative total of fifty intruding cube corners whereby the units, when properly fitted together with an intruding cube corner of each unit facing the exterior, form a body of spherical appearance.
13. A toy puzzle according to claim 12 wherein the faces of each protruding cube corner and faces adjacent thereto are similarly coloured, and four different colours are used for the building units, so that, as part of the puzzle, similarly coloured cube corners are to be grouped together in clusters.
14. A toy puzzle according to claim 13 wherein the units are coloured so that, when the puzzle is completed properly, similarly coloured clusters of cube corners are adjacent different coloured clusters of cube corners.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2003371 CA2003371A1 (en) | 1989-11-20 | 1989-11-20 | Toy building unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2003371 CA2003371A1 (en) | 1989-11-20 | 1989-11-20 | Toy building unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2003371A1 true CA2003371A1 (en) | 1991-05-20 |
Family
ID=4143589
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2003371 Abandoned CA2003371A1 (en) | 1989-11-20 | 1989-11-20 | Toy building unit |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2003371A1 (en) |
-
1989
- 1989-11-20 CA CA 2003371 patent/CA2003371A1/en not_active Abandoned
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| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |