GB2124436A - Tool for cutting and stripping cables - Google Patents
Tool for cutting and stripping cables Download PDFInfo
- Publication number
- GB2124436A GB2124436A GB08316083A GB8316083A GB2124436A GB 2124436 A GB2124436 A GB 2124436A GB 08316083 A GB08316083 A GB 08316083A GB 8316083 A GB8316083 A GB 8316083A GB 2124436 A GB2124436 A GB 2124436A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tool
- cheeks
- gripping
- wire
- cable
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/12—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for removing insulation or armouring from cables, e.g. from the end thereof
- H02G1/1202—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for removing insulation or armouring from cables, e.g. from the end thereof by cutting and withdrawing insulation
- H02G1/1204—Hand-held tools
- H02G1/1221—Hand-held tools the cutting element rotating about the wire or cable
- H02G1/1224—Hand-held tools the cutting element rotating about the wire or cable making a transverse cut
Landscapes
- Removal Of Insulation Or Armoring From Wires Or Cables (AREA)
- Processing Of Terminals (AREA)
- Communication Cables (AREA)
- Flexible Shafts (AREA)
Abstract
A cutting tool for stripping cables and wires comprises two gripping cheeks 1 and 2 provided with internal cutting edges 3 and 4, pivotable on each other about an axis of symmetry 10 of the tool between an open position in which the cable is inserted into the tool and a closed position in which the cutting edges 3 and 4 produces a circular cut in an insulation sheath of the cable. <IMAGE>
Description
SPECIFICATION
Tool for cutting and stripping cable
Background of the Invention
The present invention relates to cutting tools in general and more particularly to tools for stripping wires, cables or the like articles.
In stripping insulating material or sheathing from cables or wires a circular cut is first made in the sheath of insulation inwardly from the periphery of cable and the severed portion of the cable is then slitted in the longitudinal direction to remove the sheath from the wire.
Cutting tools for stripping wires and cables are known in the art. One of such tools is disclosed for example, in the applicant's patent 3,483,617.
Conventional cable strippers are known which include two gripping cheeks the ends of which are movable towards each other by means of a slidable sleeve which surrounds the cheeks, the cheeks carrying on the inner opposite sides thereof cutting element or cutting edges. The width and the thickness of the cutting edge used in the art usually correspond to the thickness of the insulation sheath, these cutting edges projecting normal to the elongation of the cheeks.
The cable being processed normally is guided between two gripping cheeks and the sleeve is displaced in the counter forward direction over the cheeks so that the ends of the gripping cheeks are moved one to another and the cutting edges penetrate the insulation sheath. Then the cutting tool is rotated about its longitudinal axis until the insulation sheath is separated from the core of the cable along the whole periphery of the cable. Upon rotation of the sleeve in the opposite direction the severed portion of the insulation sheath is stripped from the wire.
The disadvantage of this otherwise satisfactory conventional cutting tool is that because the cable must be inserted and guided between the gripping cheeks the attention of the operator has been directed to the procedure of the insertion of the cable which has been rather difficult. On the other hand, non-precise separation of the severed portion from the wire due to sticking of the severed portion over a determined length to the wire has not been avoided. Finally, the displacement of the sleeve to move the gripping cheeks to each other and away from each other caused a continuous force tensions. In short, the function of the known cutting tool has not been ideal.
Furthermore, conventional cutting tools of the foregoing type had no special stripping means which would make the stripping process rather easy.
According to the present invention, there is provided a cutting tool for stripping an insulation sheath from single-wire or multi-wire cables, having an axis of symmetry and comprising two elongated and curve-shaped gripping cheeks connected to each other, each of said cheeks having an inner face and carrying at least one cutter element having a width substantially corresponding to a thickness of the sheath to be stripped from a cable, the respective cutter element being arranged on the inner face of the assigned gripping cheek and extended therefrom in the direction substantially perpendicular to the elongation of the respective cheek, said cheeks being pivotally mounted to each other to pivot about said axis of symmetry between an open position to receive a cable to be processed and a closed position in which the inner faces of the gripping cheeks are located opposite to each other and said cutter elements are in the position to make a cut on said insulation sheath.
It is an object of a preferred embodiment of the present invention to provide an improved cutting tool for stripping wires or cables.
It is a further object of the embodiment to provide a cutting and stripping tool, in which insertion and fastening of the cable between the grippers of the tool is accomplished without a special sleeve of conventional tools.
It is still a further object of the embodiment to provide a cutting tool in which a favourable force distribution during the operation of the tool is obtained.
These and other objects of the embodiment are attained by a cutting tool for stripping an insulation sheath from single-wire or multi-wire cables, having an axis of symmetry and comprising two elongated and curve-shaped gripping cheeks connected to each other, each of said cheeks having an inner face and carrying at least one cutter element having a width substantially corresponding to a thickness of the sheath to be stripped from a cable, the respective cutter element being arranged on the inner face of the assigned gripping cheek and extended therefrom in the direction substantially perpendicular to the elongation of the respective cheek, said cheeks being pivotally mounted to each other to pivot about said axis of symmetry between an open position to receive a cable to be processed and a closed position in which the inner faces of the gripping cheeks are located opposite each other and said cutter elements are in the position to make a cut on said insulation sheath.
The gripping cheeks may be connected to each other by at least one hinge joint or by a number of hinge joints.
At least one of the gripping cheeks may be formed with a projection for a hand manipulating by the tool.
Furthermore, the cutting tool of the invention may be provided with wire-stripping means.
The wire-stripping means may comprise two knife blades each rigidly connected to the respective gripping cheek, said gripping cheeks each having an outer face opposite to the inner face carrying the cutter element, said knife blades being mounted to the outer faces of the respective cheeks, said knife blades having end blade portions which engage one over another in a scissor-like manner when said cheeks are in the closed position, to strip the insulation sheath from a wire of the cable. Due to the provision of the special wire-stripping means the separation of the severed portion of the insulation sheath can be performed effortless and easy.
According to still another feature of the invention the wire-stripping means may include a plurality of dents with sharp edges, said cheeks each including an elongated edge on the inner face thereof, said dents being disposed in mirrorinverted pairs and formed, respectively, on said elongated edges of the gripping cheeks.
The advantage of this embodiment of the invention resides in that in addition to the removal of the severed portion of the insulation sheath the stripping of the individual wire of the cable is also possible. Thereby a workman can employ just a single tool for stripping the cable and its wires in the case of the multi-wire cable instead of two individual tools.
According to a further feature of the invention the cutter elements may be of a shape which conforms to the shape of the inner faces of the respective gripping cheeks.
Each cutter element may be formed of two pieces. These two pieces may be arranged at an angle to each other.
The shape of the cutter element may be constituted by a portion of a circle.
In any case the cutting edges of cutter elements are expanded or have a greater length as compared to straight one-piece conventional cutter elements. Further, the surface of clamping of the cable inserted between two cheeks is enlarged when a two-piece element in place of one-piece cutter element is employed. The round or circular surface of the circular cutter element is also very effective.
Due to the provision of the longer cutter edges the cutting tool may be rotated only through 900 to accomplish a complete cut of the insulation sheath whereas with conventional cutting edges the rotation of the tool over 1 800 had been performed to produce a suitable circular cut.
According to still another feature of the invention at least two projections may be formed on each cheek for a hand manipulating by the tool said projections being spaced from each other in the direction of elongation of the respective cheek to form humps with a space therebetween, the respective projections formed on two opposite cheeks being symmetrical with respect to the axis of symmetry.
The novel features which are considered as characteristic for the invention are set forth in particular in the appended claims. The invention itself, however, both as to its construction and its method of operation, together with additional objects and advantages thereof, will be best understood from the following description of specific embodiments when read in connection with the accompanying drawing.
Brief Description of the Preferred Embodiments
Figure 1 is a side view of a cutting and stripping tool with two gripping cheeks in the open position, according to a first embodiment of the invention;
Figure 2 is a top plan view of Figure 1;
Figure 3 is a side view of the stripping tool according to a second embodiment of the invention;
Figure 4 is a top plan view of the tool of
Figure 1 or 3 but with two gripping cheeks in the closed position and with a cable inserted therebetween;
Figure 5 is a side view of a stripping tool with two gripping cheeks in the open position, according to a third embodiment of the invention
Figure 6 is a top plan view of Figure 5;
Figure 7 is a top plan view of Figure 5 but with two gripping cheeks in the closed position;;
Figure 8 is a side view of the stripping tool with two gripping cheeks in the open position, according to another embodiment of the invention;
Figure 9 is a top plan view of Figure 8;
Figure 10 is a top plan view of Figure 8 but with the gripping cheeks illustrated in the almost closed position; and
Figure 11 is a top plan view similar to Figure 9 but according to a further embodiment of the invention.
Detailed Description of the Preferred
Embodiments
Referring now to the drawings and first to
Figure 1, the cutting tool for stripping insulating material from cables is comprised of two elongated gripping cheeks 1 and 2 of which each is provided with a cutting projection or cutting edge 3 or 4, respectively. Each cheek has semicylindrical or partially cylindrical shape. Gripping
Cheeks 1 and 2 are pivotally connected to each other by means of pivot joints 5 and 6 spaced from each other in the direction of elongation of the cheeks as shown in Figure 1. When cheeks 1 and 2 are pivoted to a closed position shown in
Figure 4 they form a hollow body within the interior of which a cable 30, the insulation of which is to be stripped off, is received.
After cable 30 has been inserted into the preliminarily open gripping cheeks 1 and 2 cutting edges 3 and 4, upon pivoting of cheeks 1 and 2 towards each other and closing those cheeks penetrate the insulating material or so-called "sheathing" and, upon rotation and slight lateral bending of the cheeks, a circular cut is provided in the jacket or sheath of the cable 30. Upon drawing of the cheeks in the axial direction from the cable or pulling the cable down from the cheeks a separated piece of the insulating sheath is stripped off from the cable.
A lateral projection 8 provided at one of the cheeks, here on cheek 1 , serves for hand manipulating of the cutting tool. Cable 30 shown in Figure 4, is a multi-wire cable. It is, of course understood that a single wire cable coated with an insulating sheath can be stripped off by the tool of the invention.
It is to be realized that a single hinge joint 9 can be used for a pivotal connection of two cheeks to each other as shown in Figure 3. A hinge axle 10
seen in Figure 1 is a common axle for two hinge
joints 5 and 6.
For the sake of clarity the same reference
numerals designate the similar elements in all
Figures of the drawings.
Reference is now made to Figures 5 through 7 which depict another embodiment of the
invention.
Pivotable longitudinal gripping cheeks 1 and 2
are pivotally supported on an axle 10 extending through the axis of the symmetry of the cutting tool in the same manner as has been described for
Figures 1-4. Cutting edges or elements 3 and 4 are provided at both cheeks near the ends thereof, which cutting edges extend normal to the elongation of the gripping cheeks and formed on the inner faces of respective cheeks 1 and 2. In this embodiment a wire stripper generally indicated as 36 is provided which is arranged on the outer or external surface of cheeks 1 and 2.
The wire stripper 36 is comprised of two knife blades 7 and 8 which are rigidly connected by any suitable conventional means to respective blades 7 and 8. When gripping cheeks 1 and 2 are pivoted toward each other and folded to form an opening therebetween to receive a cable to be stripped blades 7 and 8 also move towards each other and engage one over another like scissors.
Due to this action of blades 7 and 8 the isolation sheath of the cable cut by cutting edges 3 and 4 is separated and cut off from the wire.
In another modification of the cutting and stripping tool of the present invention a further wire stripping arrangement is provided. In this arrangement instead of blades 7 and 8, oppositely disposed and mirror-inverted sharpedged dents or notches 11 and 13, and 12 and 14 are formed on two opposite longitudinal edges of cheeks 1 and 2. Dents 13 through 14 are positioned below cutting edges 3 and 4. Two opposite dents 11, 13 are spaced from two opposite dents 12 and 14.
When cheeks 1 and 2 are moved to the closed position dents 11, 12, 13 and 14 cut and separate with their sharp edges the insulation sheath from the wire.
The above described embodiment of the cutting tool provides a universal tool with which any kind of insulation sheath as well as the cable insulation sheath can be removed from the respective core.
In the embodiment shown in Figures 8 to 11 cheeks 1 and 2 are of greater width than that of the cheeks of the above described embodiments.
However, the arrangement of cheeks 1 and 2 on the central axle for pivoting by means of hinge joints 5 and 6 is similar to the embodiments of
Figures 1-7.
In the embodiment depicted in Figure 8 each cutting edge of element 3 or 4 provided gripping cheek 1 or 2, respectively, is formed by two pieces 18 and 19 on cheek 1 and two pieces 20 and 21 on cheek 2. As clearly shown in Figure 9 respective pieces 1 8 and 19 as well as 20 and 21 are angularly positioned with respect to each other, so that the cutting edge formed by the two
respective pieces extend along the inner periphery
of the respective gripping cheek.
When cheeks 1 and 2 are closed and cable 30
is inserted into the space formed by the closed
cheeks a somewhat circular cutting edge is
formed on the inner faces of two cheeks 1 and 2
whereby upon rotation of the tool or two cheeks
about the cable the circular cutting edge formed
by pieces 18, 19, 20 and 21 will produce a
circular cut on the insulation sheath surrounding
the wire so that complete separation of the
insulation sheath from the wire just by one
rotation of the tool practically through 900 will be
accomplished.
In a further modification of the cutting tool shown in Figure 11 cutting edges 3 and 4 are formed as arc-shaped pieces which conform to the
inner faces of respective cheeks 1 and 2. In this embodiment a circular cutting edge is also formed and the necessary circular cut on the insulation sheath will be obtained also upon rotation of the tool through approximately 900 similarly to the operation of the embodiment of Figure 9.
As shown in Figure 8 symmetric double projections 23, 24 and 25, 26 are provided on cheeks 1 and 2 for hand manipulation of the cutting tool, these projections form a compact hump when the cheeks are in the closed position.
An operator's finger, for example a point finger can be inserted into a space 1 7 between projections 23, 24 and 25, 26; this can substantially facilitate holding of the tool during the stripping of the separated insulation sheath from the cable.
It will be understood that each of the elements described above, or two or more together, may also find a useful application in other types of tools for cutting and stripping cables differing from the types described above.
While the invention has been illustrated and described as embodied in a tool for cutting and stripping cables, it is not intended to be limited to the details shown, since various modifications and structural changes may be made without departing in any way from the spirit of the present invention.
Without further analysis the foregoing will so fully reveal the gist of the present invention that others can, by applying current knowledge, readily adapt it for various applications without omitting features that, from the standpoint of prior art, fairly constitute essential characteristics of the generic or specific aspects of this invention.
What is claimed as new and desired to be protected by Letters Patent is set forth in the appended claims.
Claims (14)
1. A cutting tool for stripping an insulation sheath from single-wire or multi-wire cables, having an axis of symmetry and comprising two elongated and curve-shaped gripping cheeks connected to each other, each of said cheeks having an inner face and carrying at least one cutter element having a width substantially corresponding to a thickness of the sheath to be stripped from a cable, the respective cutter element being arranged on the inner face of the assigned gripping cheek and extended therefrom in the direction substantially perpendicular to the elongation of the respective cheek, said cheeks being pivotally mounted to each other to pivot about said axis of symmetry between an open position to receive a cable to be processed and a closed position in which the inner faces of the gripping cheeks are located opposite to each other and said cutter elements are in the position to make a cut on said insulation sheath.
2. A tool as claimed in claim 1, wherein each of said cheeks has a cross-section of a portion of a cylinder.
3. A tool as claimed in claim 1 or 2, wherein said gripping cheeks are connected to each other by at least one hinge joint.
4. A tool as claimed in claim 1, 2 or 3, wherein said gripping cheeks are connected to each other by a number of hinge joints.
5. A tool as claimed in claim 4, wherein said hinge joints extend through said axis of symmetry.
6. A tool as claimed in any preceding claim, wherein at least one of the gripping cheeks is formed with a projection for a hand manipulating by the tool.
7. A tool as claimed in claim 6, wherein said projection is located approximately midway between two ends of the cheek on which said projection is formed.
8. A tool as claimed in any preceding claim, further including wire-stripping means.
9. A tool as claimed in claim 8, wherein said wire-stripping means comprising two knife blades each rigidly connected to the respective gripping cheek, said gripping cheeks each having an outer face opposite to the inner face carrying the cutter element, said knife blades being mounted to the outer faces of the respective cheeks, said knife blades having end blade portions which engage one over another in a scissor-like manner when said cheeks are in the closed position to strip the insulation sheath from a wire of the cable.
10. A tool as claimed in claim 8, wherein said wire-stripping means include a plurality of dents with sharp edges, said cheeks each including an elongated edge on the inner face thereof said dents being disposed in mirror-inverted pairs and formed respectively on said elongated edges of the gripping cheeks.
11. A tool as claimed in any preceding claim, wherein said cutter elements are of a shape which conforms to the shape df the inner faces of the respective gripping cheeks.
12. A tool as claimed in Claim 1 wherein each cutter element is each formed of two pieces.
13. A tool as claimed in claim 12, wherein said two pieces are arranged at an angle to each other.
14. A tool as claimed in any preceding claim, wherein the shape of each cutter element is constituted by a portion of a circle.
1 5. A tool as defined in any preceding claim, wherein at least two projections are formed on each cheek for a hand manipulating by the tool, said projections being spaced from each other in the direction of elongation of the respective cheek to form humps with a space therebetween, the respective projections formed on two opposite cheeks being symmetrical relative to said axis.
1 6. A cutting tool for stripping an insulation sheath from single wire or multi-wire cables substantially as hereinbefore described with reference to Figures 1, 2 and 4, or Figures 3 and 4, or Figures 5, 6 and 7 or Figures 8, 9 and 10 or
Figure 11 of the accompanying drawing.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19823222326 DE3222326A1 (en) | 1982-06-14 | 1982-06-14 | Sheath-stripping tool |
DE19833310523 DE3310523A1 (en) | 1983-03-23 | 1983-03-23 | Cable-stripping tool |
DE19833312995 DE3312995A1 (en) | 1983-04-12 | 1983-04-12 | Cable-stripping apparatus |
Publications (3)
Publication Number | Publication Date |
---|---|
GB8316083D0 GB8316083D0 (en) | 1983-07-20 |
GB2124436A true GB2124436A (en) | 1984-02-15 |
GB2124436B GB2124436B (en) | 1986-01-22 |
Family
ID=27190164
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB08316083A Expired GB2124436B (en) | 1982-06-14 | 1983-06-13 | Tool for cutting and stripping cables |
Country Status (13)
Country | Link |
---|---|
AT (1) | AT382984B (en) |
BE (1) | BE896940A (en) |
CA (1) | CA1207989A (en) |
CH (1) | CH664457A5 (en) |
DK (1) | DK262383A (en) |
ES (1) | ES281218Y (en) |
FR (1) | FR2528635B1 (en) |
GB (1) | GB2124436B (en) |
IT (1) | IT1170398B (en) |
LU (1) | LU84849A1 (en) |
NL (1) | NL8302116A (en) |
NO (1) | NO832003L (en) |
SE (1) | SE459705B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2154809A (en) * | 1984-02-24 | 1985-09-11 | Josef Krampe | Cable insulation removal |
GB2211672A (en) * | 1987-10-29 | 1989-07-05 | Josef Krampe | Apparatus for removing fibre optic cable cladding and coating |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2567689A1 (en) * | 1984-07-12 | 1986-01-17 | Usinage Tubes Pour Electr | Stripping pliers |
DE3808950A1 (en) * | 1988-03-17 | 1989-10-05 | Josef Krampe | Stripping tool for clearing single-conductor or multiple-conductor cables using two jaws |
DE3844278A1 (en) * | 1988-03-17 | 1990-07-05 | Josef Krampe | STRIPPING TOOL FOR REMOVING THE INSULATION OF SINGLE OR MULTI-WIRE CABLES |
MX9504747A (en) * | 1994-12-02 | 1997-05-31 | Dyckerhoff & Widmann Ag | Sheathing cutting device and method. |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB382067A (en) * | 1931-10-26 | 1932-10-20 | Standard Radio Relay Services | Improvements in tools for severing the covering of electrical cables |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2735175A (en) * | 1956-02-21 | Aluminum cable cutter | ||
US2373868A (en) * | 1944-03-08 | 1945-04-17 | Irene H Wilson | Cable slitter |
US3122037A (en) * | 1961-12-18 | 1964-02-25 | Ideal Ind | Shear-type wire stripper |
-
1983
- 1983-04-29 AT AT0155683A patent/AT382984B/en not_active IP Right Cessation
- 1983-05-30 SE SE8303033A patent/SE459705B/en not_active IP Right Cessation
- 1983-06-02 BE BE0/210918A patent/BE896940A/en not_active IP Right Cessation
- 1983-06-03 NO NO832003A patent/NO832003L/en unknown
- 1983-06-07 LU LU84849A patent/LU84849A1/en unknown
- 1983-06-09 CA CA000429991A patent/CA1207989A/en not_active Expired
- 1983-06-09 DK DK262383A patent/DK262383A/en not_active Application Discontinuation
- 1983-06-10 IT IT48484/83A patent/IT1170398B/en active
- 1983-06-13 FR FR8309722A patent/FR2528635B1/en not_active Expired
- 1983-06-13 GB GB08316083A patent/GB2124436B/en not_active Expired
- 1983-06-13 CH CH3247/83A patent/CH664457A5/en not_active IP Right Cessation
- 1983-06-14 NL NL8302116A patent/NL8302116A/en not_active Application Discontinuation
- 1983-06-14 ES ES1983281218U patent/ES281218Y/en not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB382067A (en) * | 1931-10-26 | 1932-10-20 | Standard Radio Relay Services | Improvements in tools for severing the covering of electrical cables |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2154809A (en) * | 1984-02-24 | 1985-09-11 | Josef Krampe | Cable insulation removal |
GB2211672A (en) * | 1987-10-29 | 1989-07-05 | Josef Krampe | Apparatus for removing fibre optic cable cladding and coating |
GB2211672B (en) * | 1987-10-29 | 1991-07-03 | Josef Krampe | Apparatus for removing fibre optic cable cladding and coating |
Also Published As
Publication number | Publication date |
---|---|
FR2528635A1 (en) | 1983-12-16 |
ES281218U (en) | 1985-06-16 |
NL8302116A (en) | 1984-01-02 |
DK262383A (en) | 1983-12-15 |
DK262383D0 (en) | 1983-06-09 |
SE459705B (en) | 1989-07-24 |
CH664457A5 (en) | 1988-02-29 |
IT1170398B (en) | 1987-06-03 |
CA1207989A (en) | 1986-07-22 |
FR2528635B1 (en) | 1988-01-15 |
GB2124436B (en) | 1986-01-22 |
GB8316083D0 (en) | 1983-07-20 |
SE8303033L (en) | 1983-12-15 |
LU84849A1 (en) | 1983-11-17 |
NO832003L (en) | 1983-12-15 |
ATA155683A (en) | 1986-09-15 |
AT382984B (en) | 1987-05-11 |
SE8303033D0 (en) | 1983-05-30 |
BE896940A (en) | 1983-10-03 |
ES281218Y (en) | 1986-04-01 |
IT8348484A0 (en) | 1983-06-10 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |