CA2616478C - Fastener with removable element - Google Patents
Fastener with removable element Download PDFInfo
- Publication number
- CA2616478C CA2616478C CA 2616478 CA2616478A CA2616478C CA 2616478 C CA2616478 C CA 2616478C CA 2616478 CA2616478 CA 2616478 CA 2616478 A CA2616478 A CA 2616478A CA 2616478 C CA2616478 C CA 2616478C
- Authority
- CA
- Canada
- Prior art keywords
- threaded section
- shank
- section
- screw
- tip
- 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 - Fee Related
Links
- 230000037431 insertion Effects 0.000 claims abstract description 15
- 238000003780 insertion Methods 0.000 claims abstract description 15
- 239000011295 pitch Substances 0.000 claims description 3
- 239000002184 metal Substances 0.000 abstract description 11
- 230000009194 climbing Effects 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
- F16B35/04—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws with specially-shaped head or shaft in order to fix the bolt on or in an object
- F16B35/041—Specially-shaped shafts
- F16B35/044—Specially-shaped ends
- F16B35/045—Specially-shaped ends for retention or rotation by a tool
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
- F16B35/04—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws with specially-shaped head or shaft in order to fix the bolt on or in an object
- F16B35/041—Specially-shaped shafts
- F16B35/044—Specially-shaped ends
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B23/00—Specially shaped nuts or heads of bolts or screws for rotations by a tool
- F16B23/0007—Specially shaped nuts or heads of bolts or screws for rotations by a tool characterised by the shape of the recess or the protrusion engaging the tool
- F16B23/0038—Specially shaped nuts or heads of bolts or screws for rotations by a tool characterised by the shape of the recess or the protrusion engaging the tool substantially prismatic with up to six edges, e.g. triangular, square, pentagonal, Allen-type cross-sections
Abstract
The present invention pertains to a screw (4) with removable tip section comprising a shank (41) and a tip section (42); wherein the shank (41) has a first threaded section (412) including an upper (412a) and a lower (412b) threaded sections defined thereon with different outer diameters (D1a, D1b) and a recess (415) defined at the surface of an end face (414); further an insertion (423) of the tip section (42) includes a coincident shape with the recess (415). In this manner, the shank (41) would be smoothly driven into the metal objects (5) without being interfered or damaging the first threaded section in time of screwing; After screwing in, the tip section is alternatively removed from the shank, whereby a wrench (6) is freely put into the recess to tighten or loosen the screw so as to increase the convenience of using.
Description
FASTENER WITH REMOVABLE ELEMENT
BACKGROUND OF THE INVENTION
1. Field of the Invention The present invention relates to a fastener, in particular to a screw with removable element.
BACKGROUND OF THE INVENTION
1. Field of the Invention The present invention relates to a fastener, in particular to a screw with removable element.
2. Description of the Related Art A conventional screw 1 for screwing into metal objects is shown in Fig. 1 and generally includes a head 11, a shank 12 connecting thereto, a plurality of threads 13 defined around the shank 12, and a tip section 14 formed at a distal end of the shank 12. While screwing, the screw 1 is driven into the metal objects (not shown) by the tip section 14 and threads 13 to bore through it and further drill therein. When the screw 1 is in use of screwing roofing objects, users used to climb on the roof and use a tool (not shown) for rotating the head 11 and drilled into the objects. However, the screw 1 may be facilely screwed in but hardly taken out of the surface of objects, namely users often need to climb on the roof and repeat the above operation for repairing the objects or loosening and tightening the screw, which makes burden and damages users in time of operation.
Referring to Fig. 2, a screw 2 made for improving the above shortcomings includes a shank 21 and a tip section 22. The shank 21 fabricated of a stainless steel comprises a plurality of threads 211 spirally arranged thereon, a head 212 disposed at one end thereof, and a polygonal recess 213 at the other end. A tip section 22 made of another kind of harden metal respectively forms a tip portion 221 and an insertion 222 at two ends thereof, and the insertion 222 fits with the polygonal recess 213. While using, the screw 2 has the same operation as the screw 1 and here it is omitted;
particularly, the tip section 22 can be removed from the shank 21 and repeatedly used after securing the objects to the roof, and users simply put a tool (not shown) into the recess 213 to directly tighten or loosen the screw 2 without climbing on the roof very often.
As seen in Fig. 3, in practical, the insertion 222 is initially put into the recess 213, and the tip section 22 bores a hole 31 through the metal objects 3; nevertheless, the threads 221 with its outer diameter may not directly enter into the hole 31 and further make the screw 2 interfered between the shank 21 and the tip section 22, which result of the screw 2 unable to be substantially drilled into the objects 3 or be broken under the forced screwing although being successfully drilled therein.
SUMMARY OF THE INVENTION
Therefore, the present invention intends to provide a screw with removable element which is conducive to substantially drive the screw into metal objects and increase the convenience of using.
The present invention relates to a screw comprising a shank and a tip section, wherein the shank includes a first threaded section consisting of threaded sections with different diameters, and an insertion of the tip section has a coincident shape with a recess defined on the end face of the shank. In use, the tip portion initially bores through the metal objects, and the first threaded section is smoothlydriven and drilled into the hole from the threaded section with a smaller outer diameter toward the threaded section with a larger outer diameter, thereby assisting the screw to be firmly fixed therein and preventing from damaging threads thereof under a forced screwing. Further, the insertion can be removed away and a wrench is used instead to loosen or tighten the screw if necessary and increase the convenience of using.
The advantages of the present invention over the known prior arts will become more apparent to those of ordinary skilled in the art by reading the following descriptions with the relating drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
Fig. 1 is a perspective view showing a conventional screw;
Fig. 2 is a perspective view showing another conventional screw;
Fig. 3 is a schematic view showing the screw of Fig. 2 drilled into the metal objects;
Fig. 4 is a perspective view showing a first preferred embodiment of the present invention;
Fig. 5 is a schematic view showing that a wrench is put into the recess while the tip section is removed away;
Referring to Fig. 2, a screw 2 made for improving the above shortcomings includes a shank 21 and a tip section 22. The shank 21 fabricated of a stainless steel comprises a plurality of threads 211 spirally arranged thereon, a head 212 disposed at one end thereof, and a polygonal recess 213 at the other end. A tip section 22 made of another kind of harden metal respectively forms a tip portion 221 and an insertion 222 at two ends thereof, and the insertion 222 fits with the polygonal recess 213. While using, the screw 2 has the same operation as the screw 1 and here it is omitted;
particularly, the tip section 22 can be removed from the shank 21 and repeatedly used after securing the objects to the roof, and users simply put a tool (not shown) into the recess 213 to directly tighten or loosen the screw 2 without climbing on the roof very often.
As seen in Fig. 3, in practical, the insertion 222 is initially put into the recess 213, and the tip section 22 bores a hole 31 through the metal objects 3; nevertheless, the threads 221 with its outer diameter may not directly enter into the hole 31 and further make the screw 2 interfered between the shank 21 and the tip section 22, which result of the screw 2 unable to be substantially drilled into the objects 3 or be broken under the forced screwing although being successfully drilled therein.
SUMMARY OF THE INVENTION
Therefore, the present invention intends to provide a screw with removable element which is conducive to substantially drive the screw into metal objects and increase the convenience of using.
The present invention relates to a screw comprising a shank and a tip section, wherein the shank includes a first threaded section consisting of threaded sections with different diameters, and an insertion of the tip section has a coincident shape with a recess defined on the end face of the shank. In use, the tip portion initially bores through the metal objects, and the first threaded section is smoothlydriven and drilled into the hole from the threaded section with a smaller outer diameter toward the threaded section with a larger outer diameter, thereby assisting the screw to be firmly fixed therein and preventing from damaging threads thereof under a forced screwing. Further, the insertion can be removed away and a wrench is used instead to loosen or tighten the screw if necessary and increase the convenience of using.
The advantages of the present invention over the known prior arts will become more apparent to those of ordinary skilled in the art by reading the following descriptions with the relating drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
Fig. 1 is a perspective view showing a conventional screw;
Fig. 2 is a perspective view showing another conventional screw;
Fig. 3 is a schematic view showing the screw of Fig. 2 drilled into the metal objects;
Fig. 4 is a perspective view showing a first preferred embodiment of the present invention;
Fig. 5 is a schematic view showing that a wrench is put into the recess while the tip section is removed away;
Fig. 6 is a perspective view showing a second preferred embodiment of the present invention;
Fig. 7 is an elevation view showing a third preferred embodiment of the present invention;
Fig. 8 is an elevation view showing a fourth preferred embodiment of the present invention; and Fig. 9 is a schematic view showing the screw of Fig. 7 drilled into the metal objects.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
Referring to Fig. 4, a fastener ( for instance of a screw 4) of a first preferred embodiment comprises a shank 41 and a tip section42; the shank 41 made of a kind of inetal material, for instance of a stainless steel, comprises a shank body 411, a first threaded section 412 extending around the shank body 411, a head 413 disposed at one end of the shank body 411, and an end face 414 disposed at the other end thereof, opposite to the head 413; wherein the first threaded section 412 includes an upper threaded section 412a located adjacent to the head 413 and a lower threaded section 412b located adjacent to the end face 414; an outer diameter "Dla" of the upper threaded section 412a is greater than an outer diameter "Dib" of the lower threaded section 412b. Further the end face 414 has a recess 415 defined on the surface thereof, and the recess 415 formed in a polygonal contour, e.g. a hexagonal shape, is applied to the preferred embodiments.
Fig. 7 is an elevation view showing a third preferred embodiment of the present invention;
Fig. 8 is an elevation view showing a fourth preferred embodiment of the present invention; and Fig. 9 is a schematic view showing the screw of Fig. 7 drilled into the metal objects.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
Referring to Fig. 4, a fastener ( for instance of a screw 4) of a first preferred embodiment comprises a shank 41 and a tip section42; the shank 41 made of a kind of inetal material, for instance of a stainless steel, comprises a shank body 411, a first threaded section 412 extending around the shank body 411, a head 413 disposed at one end of the shank body 411, and an end face 414 disposed at the other end thereof, opposite to the head 413; wherein the first threaded section 412 includes an upper threaded section 412a located adjacent to the head 413 and a lower threaded section 412b located adjacent to the end face 414; an outer diameter "Dla" of the upper threaded section 412a is greater than an outer diameter "Dib" of the lower threaded section 412b. Further the end face 414 has a recess 415 defined on the surface thereof, and the recess 415 formed in a polygonal contour, e.g. a hexagonal shape, is applied to the preferred embodiments.
Still further, the tip section 42 made of another kind of harden metal material includes a tip body 421, a tip portion 422 disposed at one end thereof, and an insertion 423 extending axially from the other end thereof for being removably inserted into the recess 415. The insertion 423 can also have a polygonal configuration and here a hexagonal pillar is adopted so that the insertion 423 accurately fits with the recess 415.
Referring to Fig. 4 and 5, in operation, the screw 4 is adopted to use in screwing roofing panels, for instance of screwing metal objects S. Before screwing, the insertion 423 is initially put into the recess 415, and then the tip portion 422 is drilled into the objects 5 by rotating the head 413 and bores a hole 51 through it.
When the tip section 42 is entirely drilled therein, the shank body 411 is further driven along the hole 51 into the objects 5 by the lower threaded section 412b with the smaller outer diameter "Dlb"
to prevent the screw 4 from being directly interfered or blocked between the shank body 411 and the tip body 421 in time of screwing and the upper threaded section 412a with the larger outer diameter "Dla" to impel the shank 41 firmly fixed into the objects 5.
Subsequently, the tip section 42 can be alternatively removed from the recess 415 for a repeated use if necessary, and the recess 415 would perform in another use, namely users can work inside the house and exert a wrench 6 to insert into the recess 415 either for loosening or tightening the screw 4 from the objects S. In this manner, the _ ,..... _ ._ .. . _ screw 4 is freely adjusted according to user's demand without climbing on the roof and thus increasing the convenience.
Further referring to Fig. 6, a screw 4 of a second preferred embodiment still comprises the similar elements, and the operations and the effects are the same as the first embodiment. Differentially, the tip section 42 further provides with a second threaded section 424 disposed between the tip portion 422 and the insertion 423, and the threaded sections 412a- 412b- 424 have the same pitches.
Further referring to Fig. 7 and 8, an outer diameter "Dla" of the upper threaded section 412a is greater than an outer diameter "D2"
of the second threaded section 424 and an outer diameter "Dlb" of the lower threaded section 412b, and the outer diameter "D2" can be larger (shown in Fig. 7) or be smaller (shown in Fig. 8) than the outer diameter "Dlb". Here it is adopted in the Fig. 9 that the outer diameter "Dla" is greater than "D2" and further "D2" is greater than "Dlb".
Referring to Fig. 9, the tip portion 422 initially bores through the metal objects 5, and the second threaded section 424 assists to form a bigger hole 51 so that the lower threaded section 412b can also be gradually driven into the objects 5 along the hole 51 without being interrupted. While drilling from the lower threaded section 412b toward the upper threaded section 412a, the upper threaded section 412a is secured into the objects 5 to result of ..{ ........ _. ... .... .. . ...... . .. . .. .
the screw 4 being firmly fixed therein and thus increasing the screwing stability.
To sum up, the present invention takes advantage of the shank having a first threaded section with different outer diameters and the tip section which may also include a second threaded section spiraling thereon. In use, the shank can be smoothly driven into the objects along the screwing hole by the above threaded sections, so that the screw is substantially and entirely drilled into the objects without breaking the first threaded section and retains a good screwing stability. After screwing, a wrench can be used instead of the tip section to insert into the recess for loosing or tightening the screw, thereby increasing the convenience of using.
While we have shown and described the embodiment in accordance with the present invention, it should be clear to those skilled in the art that further embodiments may be made without departing from the scope of the present invention.
Referring to Fig. 4 and 5, in operation, the screw 4 is adopted to use in screwing roofing panels, for instance of screwing metal objects S. Before screwing, the insertion 423 is initially put into the recess 415, and then the tip portion 422 is drilled into the objects 5 by rotating the head 413 and bores a hole 51 through it.
When the tip section 42 is entirely drilled therein, the shank body 411 is further driven along the hole 51 into the objects 5 by the lower threaded section 412b with the smaller outer diameter "Dlb"
to prevent the screw 4 from being directly interfered or blocked between the shank body 411 and the tip body 421 in time of screwing and the upper threaded section 412a with the larger outer diameter "Dla" to impel the shank 41 firmly fixed into the objects 5.
Subsequently, the tip section 42 can be alternatively removed from the recess 415 for a repeated use if necessary, and the recess 415 would perform in another use, namely users can work inside the house and exert a wrench 6 to insert into the recess 415 either for loosening or tightening the screw 4 from the objects S. In this manner, the _ ,..... _ ._ .. . _ screw 4 is freely adjusted according to user's demand without climbing on the roof and thus increasing the convenience.
Further referring to Fig. 6, a screw 4 of a second preferred embodiment still comprises the similar elements, and the operations and the effects are the same as the first embodiment. Differentially, the tip section 42 further provides with a second threaded section 424 disposed between the tip portion 422 and the insertion 423, and the threaded sections 412a- 412b- 424 have the same pitches.
Further referring to Fig. 7 and 8, an outer diameter "Dla" of the upper threaded section 412a is greater than an outer diameter "D2"
of the second threaded section 424 and an outer diameter "Dlb" of the lower threaded section 412b, and the outer diameter "D2" can be larger (shown in Fig. 7) or be smaller (shown in Fig. 8) than the outer diameter "Dlb". Here it is adopted in the Fig. 9 that the outer diameter "Dla" is greater than "D2" and further "D2" is greater than "Dlb".
Referring to Fig. 9, the tip portion 422 initially bores through the metal objects 5, and the second threaded section 424 assists to form a bigger hole 51 so that the lower threaded section 412b can also be gradually driven into the objects 5 along the hole 51 without being interrupted. While drilling from the lower threaded section 412b toward the upper threaded section 412a, the upper threaded section 412a is secured into the objects 5 to result of ..{ ........ _. ... .... .. . ...... . .. . .. .
the screw 4 being firmly fixed therein and thus increasing the screwing stability.
To sum up, the present invention takes advantage of the shank having a first threaded section with different outer diameters and the tip section which may also include a second threaded section spiraling thereon. In use, the shank can be smoothly driven into the objects along the screwing hole by the above threaded sections, so that the screw is substantially and entirely drilled into the objects without breaking the first threaded section and retains a good screwing stability. After screwing, a wrench can be used instead of the tip section to insert into the recess for loosing or tightening the screw, thereby increasing the convenience of using.
While we have shown and described the embodiment in accordance with the present invention, it should be clear to those skilled in the art that further embodiments may be made without departing from the scope of the present invention.
Claims (4)
1. A screw (4) with removable element comprising:
a shank (41) and a tip section (42); wherein, said shank (41) comprising a shank body (411), a first threaded section (412) extending around said shank body (411), a head (413) disposed at one end of said shank body (411), and an end face (414) disposed at the other end thereof, opposite to said head (413); wherein said end face (414) having a recess (415) defined thereon; said tip section (42) comprising a body (421), a tip portion (422)disposed at one end of said tip body (421), and an insertion (423) extending axially from the other end thereof for being removably inserted into said recess (415).
characterized in that said first threaded section (412) has an upper threaded section (412a) located adjacent to said head (413) and a lower threaded section (412b) located adjacent to said end face (414); an outer diameter (D1a) of said upper threaded section (412a) is greater than an outer diameter (D1b) of said lower threaded section (412b).
a shank (41) and a tip section (42); wherein, said shank (41) comprising a shank body (411), a first threaded section (412) extending around said shank body (411), a head (413) disposed at one end of said shank body (411), and an end face (414) disposed at the other end thereof, opposite to said head (413); wherein said end face (414) having a recess (415) defined thereon; said tip section (42) comprising a body (421), a tip portion (422)disposed at one end of said tip body (421), and an insertion (423) extending axially from the other end thereof for being removably inserted into said recess (415).
characterized in that said first threaded section (412) has an upper threaded section (412a) located adjacent to said head (413) and a lower threaded section (412b) located adjacent to said end face (414); an outer diameter (D1a) of said upper threaded section (412a) is greater than an outer diameter (D1b) of said lower threaded section (412b).
2. A screw (4) with removable element comprising:
a shank (41) and a tip section (42); wherein, said shank (41) comprising a shank body (411), a first threaded section (412) extending around said shank body (411), a head (413) disposed at one end of said shank body (411), and an end face (414) disposed at the other end thereof, opposite to said head (413); wherein said end face (414) having a recess (415) defined thereon; said tip section (42) comprising a tip body (421), a tip portion (422) disposed at one end of said tip body (421), and an insertion (423) extending axially from the other end thereof for being removably inserted into said recess (415).
characterized in that said first threaded section (412) has an upper threaded section (412a) located adjacent to said head (413) and a lower threaded section (412b) located adjacent to said end face (414); said tip section (42) further provides with a second threaded section (424) disposed between said tip portion (422) and said insertion (423), so that said first threaded section (412) can engage to said second threaded section (424) by said insertion (423) accurately fitting with said recess (415).
a shank (41) and a tip section (42); wherein, said shank (41) comprising a shank body (411), a first threaded section (412) extending around said shank body (411), a head (413) disposed at one end of said shank body (411), and an end face (414) disposed at the other end thereof, opposite to said head (413); wherein said end face (414) having a recess (415) defined thereon; said tip section (42) comprising a tip body (421), a tip portion (422) disposed at one end of said tip body (421), and an insertion (423) extending axially from the other end thereof for being removably inserted into said recess (415).
characterized in that said first threaded section (412) has an upper threaded section (412a) located adjacent to said head (413) and a lower threaded section (412b) located adjacent to said end face (414); said tip section (42) further provides with a second threaded section (424) disposed between said tip portion (422) and said insertion (423), so that said first threaded section (412) can engage to said second threaded section (424) by said insertion (423) accurately fitting with said recess (415).
3. The screw as claimed in claim 2, wherein said threaded sections (412a .cndot. 412b .cndot. 424) have the same pitches and respectively have outer diameters (D1a .cndot. D1b .cndot. D2); the outer diameter (D1a) of said upper threaded section (412a) is greater than the outer diameter (D2) of said second threaded section (424), and the outer diameter (D2) of said second threaded section (424) is greater than the outer diameter (D1b) of said lower threaded section (412b).
4. The screw as claimed in claim 2, wherein said threaded sections (412a .cndot. 412b .cndot. 424) have the same pitches and respectively have outer diameters (D1a .cndot. D1b .cndot. D2); the outer diameter (D1a) of said upper threaded section (412a) is greater than the outer diameter (D1b) of said upper threaded section (412b), and the outer diameter (D1b) of said upper threaded section (412b) is greater than the outer diameter (D2) of said second threaded section (424).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2616478 CA2616478C (en) | 2007-12-28 | 2007-12-28 | Fastener with removable element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2616478 CA2616478C (en) | 2007-12-28 | 2007-12-28 | Fastener with removable element |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2616478A1 CA2616478A1 (en) | 2009-06-28 |
| CA2616478C true CA2616478C (en) | 2011-01-11 |
Family
ID=40821859
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2616478 Expired - Fee Related CA2616478C (en) | 2007-12-28 | 2007-12-28 | Fastener with removable element |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2616478C (en) |
-
2007
- 2007-12-28 CA CA 2616478 patent/CA2616478C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CA2616478A1 (en) | 2009-06-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20141229 |