CA1094267A - Apparatus for processing filleted fish - Google Patents
Apparatus for processing filleted fishInfo
- Publication number
- CA1094267A CA1094267A CA309,555A CA309555A CA1094267A CA 1094267 A CA1094267 A CA 1094267A CA 309555 A CA309555 A CA 309555A CA 1094267 A CA1094267 A CA 1094267A
- Authority
- CA
- Canada
- Prior art keywords
- cutting tools
- fish
- skeletons
- recess
- cutting
- 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
Links
Classifications
-
- A—HUMAN NECESSITIES
- A22—BUTCHERING; MEAT TREATMENT; PROCESSING POULTRY OR FISH
- A22C—PROCESSING MEAT, POULTRY, OR FISH
- A22C25/00—Processing fish ; Curing of fish; Stunning of fish by electric current; Investigating fish by optical means
- A22C25/16—Removing fish-bones; Filleting fish
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Food Science & Technology (AREA)
- Processing Of Meat And Fish (AREA)
Abstract
ABSTRACT OF DISCLOSURE
In an apparatus for mechanical severing of usable parts of the skeletons of filleted fish, comprising a pair of parallel cutting tools mounted at a spacing from each other to be rotatable in respective substantially vertical planes, the invention concerns a feed path, advantageously in the form of a feed surface disposed upstream of the cutting tools with respect to a given direction of movement of fish skeletons therethrough, extending to the cutting zone of the cutting tools, and having a recess, which communicates with the space between the cutting tools and is bounded on each side thereof by a respective support.
I.
In an apparatus for mechanical severing of usable parts of the skeletons of filleted fish, comprising a pair of parallel cutting tools mounted at a spacing from each other to be rotatable in respective substantially vertical planes, the invention concerns a feed path, advantageously in the form of a feed surface disposed upstream of the cutting tools with respect to a given direction of movement of fish skeletons therethrough, extending to the cutting zone of the cutting tools, and having a recess, which communicates with the space between the cutting tools and is bounded on each side thereof by a respective support.
I.
Description
~0~2fi7 ~ACKGROUND OF THE INVENTION
1. Field of Invention The present invention relates to apparatus for pro-cessing filleted fish, in particular to apparatus for mechanically severing usable parts of the skeletons o~
filleted fish, said apparatus being of the kind which comprises a pair of parallel cutting tools mounted at a spacing rrom each other to be rotatable in respective substantially vertical planes.
1. Field of Invention The present invention relates to apparatus for pro-cessing filleted fish, in particular to apparatus for mechanically severing usable parts of the skeletons o~
filleted fish, said apparatus being of the kind which comprises a pair of parallel cutting tools mounted at a spacing rrom each other to be rotatable in respective substantially vertical planes.
2. DescriptiOn of Prior Art There are disclosed in German (Fed. Rep.) Offenlegungsschrift 25 53 5~6 a process and apparatus for processing fish skeletons, in which fish skeletons lying on their side~ are guided through a pair of cutting devices arranged at a spacing from each other, lateral parts being simultaneously severed from the backbones. As a means for guidance of the skeletons, the apparatus has a conveyor belt and, arranged downstream thereof, conveying rollers for further guidance of the skeletons to a cutting station, the conveying rollers consisting at least of one pair of conveying wheels, between which the fish skeletons can pass, and the conveyors of each pair having toothed edges.
This apparatus has an increased utilisation of technical means, yet nevertheless, is unable to securely feed the fish ~5 skeletons to the cutting tools, as it has neither means for guiding the tail fins nor means for an uninterrupted guiding of the bone trunks.
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This apparatus has an increased utilisation of technical means, yet nevertheless, is unable to securely feed the fish ~5 skeletons to the cutting tools, as it has neither means for guiding the tail fins nor means for an uninterrupted guiding of the bone trunks.
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3. Main Object of Invention It is one of the main objects of the invention to improve the known apparatus in a way that the skeletons of filleted fish may be fed in close sequence and conveyed automatically through the processing tools while guiding their vertebrae and tail fins.
SUMMARY OF THE INVENTION
According to the present invention there is provided apparatus for mechanical severing of usable parts Or the skeletons of filleted fish, comprising a pair of parallel cutting tools mounted at a spacing from each other to be rotatable in respective substantially vertical planes, the improvement residing in a feed path disposed upstream of the cutting tools with respect to a given direction of movement of fish ~keletons therethrough and extending to the cutting zone of the cutting tools, the feed path having a recess which communicates with the space between the cutting tool~ and is bounded on each side thereof by a respective support.
The advantages achieved by this arrangement consist, in particular, in that the fish skeletons can, independently of their consistency, be easily displaced along the feed path, because their tail fins encounter a continuous support surface and their vertebrae are securely guided 2~ in the recess.
10~42t~7 Preferably, the apparatus further comprises a pair of rotatable guide discs disposed above the feed path and upstream of the cutting tools and each defining by its underside an acute angle with a respective one of the supports positioned below the guide discs, the latter being so arranged that adjacent portions of their peripheries extend adjacent to and above edges of the support surfaces bordering the recess and project into the recess, and being so rotatable that said portions of their peripheries have a component of movement in the given direction of movement of the skeletons. By this means, an automatic centring of the the backbone is guaranteed before entry of the skeleton between, and its forcible transport through, the cutting tools.
Expediently, at least one of the guide discs is mounted to be displaceable against a resilient bias, which may guarantee a secure conveying engagement at every position of a skeleton and at such of differently sized fish.
Advantageously, each of the guide discs is provided at at least one of its periphery and underside with toothlike projections or depressions. Thereby, positive engagement of the vertebrae or spokes of the skeletons is ensured.
The recess may have in at least a part thereof a sub-stantially V-shaped base, which ensures secure guidance of the skeletons of small flatfish, or a substantially U-shaped base, which allows the backbones of different kinds or species of fish to be securely guided. Additionally cr alternatively, the receqs may be formed in at least a part of its length 10942~;7 upstream of the cutting tools as a slot and be bordered by mutually opposite edges of the support surfaces. Thereby, it is possible also to convey skeletons provided with lateral vertebral appendages resp. processes between and through the cutting tools.
Preferably, each of the cutting tools comprises a respective rotatable circular knife mounted above and pene-trating into the feed path formed as a feed surface, and a respective conveying disc mounted under and in shearing relationship to the knife. This makes certain that skin and sinews can be cut through.
Advantageously, also, the circular knives and/or the conveying discs have serrated edges, which avoids delaying the skeletons during separation of the back and belly spokes.
For preference, the conveying discs of the cutting tools rotate in the opposite direction to and at a lower peripheral Qpeed than the circular knives of the cutting tools, which guarantees secure conveying of the skeletons and self-cleaning of the apparatus.
To enable a safe and quick processing of the skeletons in accordance with the normally continuous and/or high speed output of a fish filleting machine the apparatus may be be arranged in combination with a fish filleting machine provided with an outlet for the skeleton~ of fish filleted by said machine, the apparatus being arranged at an incli-nation b~low said outlet of the machine and the feed path surface cf the apparatus being arranged as an outlet chute for fi~h skeletons discharged from the outlet.
SUMMARY OF THE INVENTION
According to the present invention there is provided apparatus for mechanical severing of usable parts Or the skeletons of filleted fish, comprising a pair of parallel cutting tools mounted at a spacing from each other to be rotatable in respective substantially vertical planes, the improvement residing in a feed path disposed upstream of the cutting tools with respect to a given direction of movement of fish ~keletons therethrough and extending to the cutting zone of the cutting tools, the feed path having a recess which communicates with the space between the cutting tool~ and is bounded on each side thereof by a respective support.
The advantages achieved by this arrangement consist, in particular, in that the fish skeletons can, independently of their consistency, be easily displaced along the feed path, because their tail fins encounter a continuous support surface and their vertebrae are securely guided 2~ in the recess.
10~42t~7 Preferably, the apparatus further comprises a pair of rotatable guide discs disposed above the feed path and upstream of the cutting tools and each defining by its underside an acute angle with a respective one of the supports positioned below the guide discs, the latter being so arranged that adjacent portions of their peripheries extend adjacent to and above edges of the support surfaces bordering the recess and project into the recess, and being so rotatable that said portions of their peripheries have a component of movement in the given direction of movement of the skeletons. By this means, an automatic centring of the the backbone is guaranteed before entry of the skeleton between, and its forcible transport through, the cutting tools.
Expediently, at least one of the guide discs is mounted to be displaceable against a resilient bias, which may guarantee a secure conveying engagement at every position of a skeleton and at such of differently sized fish.
Advantageously, each of the guide discs is provided at at least one of its periphery and underside with toothlike projections or depressions. Thereby, positive engagement of the vertebrae or spokes of the skeletons is ensured.
The recess may have in at least a part thereof a sub-stantially V-shaped base, which ensures secure guidance of the skeletons of small flatfish, or a substantially U-shaped base, which allows the backbones of different kinds or species of fish to be securely guided. Additionally cr alternatively, the receqs may be formed in at least a part of its length 10942~;7 upstream of the cutting tools as a slot and be bordered by mutually opposite edges of the support surfaces. Thereby, it is possible also to convey skeletons provided with lateral vertebral appendages resp. processes between and through the cutting tools.
Preferably, each of the cutting tools comprises a respective rotatable circular knife mounted above and pene-trating into the feed path formed as a feed surface, and a respective conveying disc mounted under and in shearing relationship to the knife. This makes certain that skin and sinews can be cut through.
Advantageously, also, the circular knives and/or the conveying discs have serrated edges, which avoids delaying the skeletons during separation of the back and belly spokes.
For preference, the conveying discs of the cutting tools rotate in the opposite direction to and at a lower peripheral Qpeed than the circular knives of the cutting tools, which guarantees secure conveying of the skeletons and self-cleaning of the apparatus.
To enable a safe and quick processing of the skeletons in accordance with the normally continuous and/or high speed output of a fish filleting machine the apparatus may be be arranged in combination with a fish filleting machine provided with an outlet for the skeleton~ of fish filleted by said machine, the apparatus being arranged at an incli-nation b~low said outlet of the machine and the feed path surface cf the apparatus being arranged as an outlet chute for fi~h skeletons discharged from the outlet.
- 4 -1094Z~
An embodiment of the present invention will now be more particularly described by way of example with reference to the accompanying schematic drawings, in which:-Fig. 1 is a plan view Or apparatus embodying the invention;
Fig. 2 is an end view of the apparatus of Fig. l;
Fig. 3 is a cross-sectional view of a feed surface of the apparatus, with a recess having a V-shaped base; and Fig. 4 is a view similar to Fig. 3, but with the reces~ having a U-shaped base.
An apparatus for severing parts of the skeletons Or filleted fish is shown comprising a machine support (not shown) with bearings and drives for two horizontal, aligned rota-tional axles 25, 26, the lefthand axle 25 carrying a circular knife 21 at its right end, and the righthand axle 26 carrying a circular knife 23 at its left end. Below circular knives 21, 23, a pair of transport discs 22, 24 are arranged on two horizontal, aligned rotational axles 27, 28 in such a manner that the disc 22 is fastened to the right end of the lefthand axle 27 and the disc 24 to the left end of the righthand axle 28.
The transport discs 22, 24 are spaced apart to define therebetween a gap 29 which is of such a size that it is sufficient for the passage of the large~t size - likely to be encountered within the field of use of the apparatus -of the vertebrae of the skeleton of a fish. The knives 21, 23 are mounted in such a manner that their cutting edges extend down to the rotational surface Or the discs 22, 24 and each shearingly cooperateswith the outwardly facing side of the associated one of the discs. This shearing can be increased by, for example, subjecting each of the knives 21, 23 to an inward resilient bias. The knives 21, 23 can be provided at their circumferences with grooves, rills or teeth, and the discs 22, 24 advantageously with saw teeth.
Their ~rive is effected by suitable means in such a manner that the knives 21, 23 rotate in the opposite direction to that of the discs 22, 24, the knives rotating at greater peripheral ~peed than the discs.
Rigidly mounted on the machine support, somewhat below the upper edges of the discs 22, 24 and in front thereof, is of a feed surface 1 a feed path in the form~ which can continue at both sides of and behind the discs. The feed surface 1 serves for the reception and guiding of the fish skeletons and can be constructed a~ a planar, curved~or flat V surface. It can be arranged to be horizontàl or inclined. In the region of the gap 29 between the planes defined by the discs 22, 24, the feed surface 1 has a recess 15, which divides the feed ~urface into a left support ~urface 11 with a left guide edge 13 and a right support surface 12 with a right guide edge 14. The recess 15 can be formed by a V-shaped trough 16, as shown in Fig. 3, or a U-shaped channel 17, as shown in Fig. 4.
However, the recess 15 can, at least in one part of the length of the feed surface 1, in particular closely ahead of the cutting tools 21 through 24,also be formed as a slot 18 10~4267 between the guide edges 13, 14 of the support surfaces 11, 12.
Ahead of the cutting tools 21, 22, and 23, 24, a pair of guide discs 31, 41 are mounted on axles 32, 42, respectively, to be rotatable and are arranged symmetrically with respect to the cutting tools in such a manner that their undersides define with the support surfaces 11, 12 thereunder acute angles 35, 45, respectively, and that the adjacent portions of their peripheries extend into the area of the recess 15 above the latter and lie closely over the guide edges 13, 14.
The inclined axles 32, 42 can be carried by pivot arms (not shown) and driven by appropriate means in the directions indicated by the arrows, while the peripheral speed of the discs 31, 41 may correspond to, for example, that of the conveying discs 22, 24. The edges or undersides of the guide discs 31, 41 can be provided with toothlike projections or recesses. In addition~ either or both of the guide discs 31, 41 can be constructed to be displaceable outwardly against a resilient bias, with the path of displacement, e.g. the pivot path inwardly limited by a stop (not shown).
The mode of operation of the apparatus hereinbefore described is as follows:
The skeleton of a (not shown) filleted fish, lying on one of its sides and with its tail fin leading, is pushed in a conveying direction 19 onto the feed surface 1, the tail fin covering over the recess 15. On further pushing by hand or under the force of gravity, the tail fin sliding along the support surfaces 11, 12 arrive~ below the two :
lO~Z~7 guide discs 31, 41, while the underside of the backbone is guided in the recess 15. As soon as the vertebrae of the tail part of the skeleton have reached the guide discs 31, 41, the upper sides of the vertebrae are seized, centred, and advanced in the conveying direction 19 by the mutuall~r opposite peripheral portions 37, 47 of the guide discs 31, 41, respectively. Thus, the skeleton arrives in the operating region of the cutting tools 21, 22 and 23, 24, which cut off the parts laterally adjacent the backbone. The backbone then falls down through the slot 18, while the usable parts of the fish skeleton, disposed on the left support surface 11 and right support surface 12, respectively, can be fed directly to a bone separator.
In the processsing of fish skeletons with pronounced lateral vertebral appendages or processes - for example, cod - the guiding, centring and feeding takes place in the same way.
With further progressing of the skeleton, the lower lateral vertebral processes slide into the slot 1~ after leaving the recess 15, while the upwardly projecting lateral vertebral processes pa~s between the guide discs 31, 41 together with the backbone, and the lower lateral vertebral processes between the cutting tools 21, 22 and 23, 24, whereby the lateral parts of the skeleton are severed in the above-described manner.
A particularly advantageous mode of use of apparatus embodying the invention is provided when the apparatus is arranged, in association with a fish filleting machine, at an outlet of the machine for fish skeletons. By arrangement '` "
~0~42~;7 of the apparatus to be inclined in a manner appropriate to the disposition of the filleting machine, the inflow of fish skeletons along the feed surface to the guide discs can take place completely automatically.
,
An embodiment of the present invention will now be more particularly described by way of example with reference to the accompanying schematic drawings, in which:-Fig. 1 is a plan view Or apparatus embodying the invention;
Fig. 2 is an end view of the apparatus of Fig. l;
Fig. 3 is a cross-sectional view of a feed surface of the apparatus, with a recess having a V-shaped base; and Fig. 4 is a view similar to Fig. 3, but with the reces~ having a U-shaped base.
An apparatus for severing parts of the skeletons Or filleted fish is shown comprising a machine support (not shown) with bearings and drives for two horizontal, aligned rota-tional axles 25, 26, the lefthand axle 25 carrying a circular knife 21 at its right end, and the righthand axle 26 carrying a circular knife 23 at its left end. Below circular knives 21, 23, a pair of transport discs 22, 24 are arranged on two horizontal, aligned rotational axles 27, 28 in such a manner that the disc 22 is fastened to the right end of the lefthand axle 27 and the disc 24 to the left end of the righthand axle 28.
The transport discs 22, 24 are spaced apart to define therebetween a gap 29 which is of such a size that it is sufficient for the passage of the large~t size - likely to be encountered within the field of use of the apparatus -of the vertebrae of the skeleton of a fish. The knives 21, 23 are mounted in such a manner that their cutting edges extend down to the rotational surface Or the discs 22, 24 and each shearingly cooperateswith the outwardly facing side of the associated one of the discs. This shearing can be increased by, for example, subjecting each of the knives 21, 23 to an inward resilient bias. The knives 21, 23 can be provided at their circumferences with grooves, rills or teeth, and the discs 22, 24 advantageously with saw teeth.
Their ~rive is effected by suitable means in such a manner that the knives 21, 23 rotate in the opposite direction to that of the discs 22, 24, the knives rotating at greater peripheral ~peed than the discs.
Rigidly mounted on the machine support, somewhat below the upper edges of the discs 22, 24 and in front thereof, is of a feed surface 1 a feed path in the form~ which can continue at both sides of and behind the discs. The feed surface 1 serves for the reception and guiding of the fish skeletons and can be constructed a~ a planar, curved~or flat V surface. It can be arranged to be horizontàl or inclined. In the region of the gap 29 between the planes defined by the discs 22, 24, the feed surface 1 has a recess 15, which divides the feed ~urface into a left support ~urface 11 with a left guide edge 13 and a right support surface 12 with a right guide edge 14. The recess 15 can be formed by a V-shaped trough 16, as shown in Fig. 3, or a U-shaped channel 17, as shown in Fig. 4.
However, the recess 15 can, at least in one part of the length of the feed surface 1, in particular closely ahead of the cutting tools 21 through 24,also be formed as a slot 18 10~4267 between the guide edges 13, 14 of the support surfaces 11, 12.
Ahead of the cutting tools 21, 22, and 23, 24, a pair of guide discs 31, 41 are mounted on axles 32, 42, respectively, to be rotatable and are arranged symmetrically with respect to the cutting tools in such a manner that their undersides define with the support surfaces 11, 12 thereunder acute angles 35, 45, respectively, and that the adjacent portions of their peripheries extend into the area of the recess 15 above the latter and lie closely over the guide edges 13, 14.
The inclined axles 32, 42 can be carried by pivot arms (not shown) and driven by appropriate means in the directions indicated by the arrows, while the peripheral speed of the discs 31, 41 may correspond to, for example, that of the conveying discs 22, 24. The edges or undersides of the guide discs 31, 41 can be provided with toothlike projections or recesses. In addition~ either or both of the guide discs 31, 41 can be constructed to be displaceable outwardly against a resilient bias, with the path of displacement, e.g. the pivot path inwardly limited by a stop (not shown).
The mode of operation of the apparatus hereinbefore described is as follows:
The skeleton of a (not shown) filleted fish, lying on one of its sides and with its tail fin leading, is pushed in a conveying direction 19 onto the feed surface 1, the tail fin covering over the recess 15. On further pushing by hand or under the force of gravity, the tail fin sliding along the support surfaces 11, 12 arrive~ below the two :
lO~Z~7 guide discs 31, 41, while the underside of the backbone is guided in the recess 15. As soon as the vertebrae of the tail part of the skeleton have reached the guide discs 31, 41, the upper sides of the vertebrae are seized, centred, and advanced in the conveying direction 19 by the mutuall~r opposite peripheral portions 37, 47 of the guide discs 31, 41, respectively. Thus, the skeleton arrives in the operating region of the cutting tools 21, 22 and 23, 24, which cut off the parts laterally adjacent the backbone. The backbone then falls down through the slot 18, while the usable parts of the fish skeleton, disposed on the left support surface 11 and right support surface 12, respectively, can be fed directly to a bone separator.
In the processsing of fish skeletons with pronounced lateral vertebral appendages or processes - for example, cod - the guiding, centring and feeding takes place in the same way.
With further progressing of the skeleton, the lower lateral vertebral processes slide into the slot 1~ after leaving the recess 15, while the upwardly projecting lateral vertebral processes pa~s between the guide discs 31, 41 together with the backbone, and the lower lateral vertebral processes between the cutting tools 21, 22 and 23, 24, whereby the lateral parts of the skeleton are severed in the above-described manner.
A particularly advantageous mode of use of apparatus embodying the invention is provided when the apparatus is arranged, in association with a fish filleting machine, at an outlet of the machine for fish skeletons. By arrangement '` "
~0~42~;7 of the apparatus to be inclined in a manner appropriate to the disposition of the filleting machine, the inflow of fish skeletons along the feed surface to the guide discs can take place completely automatically.
,
Claims (12)
1. Apparatus for mechanical severing of usable parts of the skeletons of filleted fish, comprising a pair of parallel cut-ting tools mounted at a spacing from each other to be rotatable in respective substantially vertical planes, wherein a feed path is disposed upstream of the cutting tools with respect to a given direction of movement of fish skeletons therethrough and extending to the cutting zone of the cutting tools, said feed path having a recess which communicates with the space between the cutting tools and is bounded on each side thereof by a respective support.
2. Apparatus as claimed in claim 1, wherein a pair of rotatable guide discs is disposed above the feed path and up-stream of the cutting tools and each defining by its underside an acute angle with a respective one of the supports positioned below the guide discs, the latter being so arranged that adjacent portions of their peripheries extend adjacent to and above edges of the supports bordering the recess and project into the recess, and being so rotatable that said portions of their peripheries have a component of movement in the given direction of movement of the skeletons.
3. Apparatus as claimed in claim 2, wherein at least one of the guide discs is mounted to be displaceable against a re-silient bias.
4. Apparatus as claimed in either claim 2 or claim 3, wherein each of the guide discs is provided at at least one of its periphery and underside with toothlike projections or depressions.
5. Apparatus as claimed in claim 1, 2 or 3, wherein the recess has in at least a part thereof a substan-tially V-shaped base.
6. Apparatus as claimed in claim 1, 2 or 3, wherein the recess has in at least a part thereof a substantially U-shaped base.
7. Apparatus as claimed in claim 1, 2 or 3, wherein the recess is formed in at least a part of its length upstream of the cutting tools as a slot and is bordered by mutually opposite guide edges of the support surfaces.
8. Apparatus as claimed in claim 1, wherein each of the cutting tool comprises a respective rotatable circular knife mounted above and penetrating into the feed path formed as a feed surface, and a respective conveying disc mounted under and in shearing relationship to the respective knife.
9. Apparatus as claimed in claim 8, wherein the circular knife of each cutting tool has a serrated edge.
10. Apparatus as claimed in claim 8, wherein the conveying disc of each cutting tool has a serrated edge.
11. Apparatus as claimed in claim 8, 9 or 10, wherein the conveying discs of the cutting tools rotate in the opposite direction to and at a lower peripheral speed than the circular knives of the cutting tools.
12. Apparatus as claimed in claim 1, 2 or 3, in combination with a fish filleting machine provided with an outlet for the skeletons of fish filleted by said machine, the apparatus being arranged at an inclination below said outlet of the machine and the feed path surface of the apparatus being arranged as an outlet chute for fish skeletons discharged from the outlet.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP2738845 | 1977-08-29 | ||
| DE19772738845 DE2738845C3 (en) | 1977-08-29 | 1977-08-29 | Device for separating the passable parts of the skeleton of filleted fish |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1094267A true CA1094267A (en) | 1981-01-27 |
Family
ID=6017555
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA309,555A Expired CA1094267A (en) | 1977-08-29 | 1978-08-17 | Apparatus for processing filleted fish |
Country Status (4)
| Country | Link |
|---|---|
| CA (1) | CA1094267A (en) |
| DE (1) | DE2738845C3 (en) |
| DK (1) | DK349178A (en) |
| SE (1) | SE7713780L (en) |
-
1977
- 1977-08-29 DE DE19772738845 patent/DE2738845C3/en not_active Expired
- 1977-12-05 SE SE7713780A patent/SE7713780L/en not_active Application Discontinuation
-
1978
- 1978-08-08 DK DK349178A patent/DK349178A/en unknown
- 1978-08-17 CA CA309,555A patent/CA1094267A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE2738845C3 (en) | 1980-04-10 |
| DK349178A (en) | 1979-03-01 |
| DE2738845A1 (en) | 1979-06-13 |
| DE2738845B2 (en) | 1979-07-26 |
| SE7713780L (en) | 1979-03-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |