GB2283997A - Installation of roofing panels - Google Patents

Installation of roofing panels Download PDF

Info

Publication number
GB2283997A
GB2283997A GB9418813A GB9418813A GB2283997A GB 2283997 A GB2283997 A GB 2283997A GB 9418813 A GB9418813 A GB 9418813A GB 9418813 A GB9418813 A GB 9418813A GB 2283997 A GB2283997 A GB 2283997A
Authority
GB
United Kingdom
Prior art keywords
end cap
upper side
channel
side wall
gasket
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
Application number
GB9418813A
Other versions
GB2283997B (en
GB9418813D0 (en
Inventor
John Edward Lancaster
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ultraframe PLC
Original Assignee
Ultraframe PLC
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=10742203&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=GB2283997(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Ultraframe PLC filed Critical Ultraframe PLC
Priority to GB9613202A priority Critical patent/GB2299596B/en
Publication of GB9418813D0 publication Critical patent/GB9418813D0/en
Publication of GB2283997A publication Critical patent/GB2283997A/en
Application granted granted Critical
Publication of GB2283997B publication Critical patent/GB2283997B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D3/00—Roof covering by making use of flat or curved slabs or stiff sheets
    • E04D3/02—Roof covering by making use of flat or curved slabs or stiff sheets of plane slabs, slates, or sheets, or in which the cross-section is unimportant
    • E04D3/06—Roof covering by making use of flat or curved slabs or stiff sheets of plane slabs, slates, or sheets, or in which the cross-section is unimportant of glass or other translucent material; Fixing means therefor
    • E04D3/08—Roof covering by making use of flat or curved slabs or stiff sheets of plane slabs, slates, or sheets, or in which the cross-section is unimportant of glass or other translucent material; Fixing means therefor with metal glazing bars
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/54—Slab-like translucent elements
    • E04C2/543—Hollow multi-walled panels with integrated webs
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D3/00—Roof covering by making use of flat or curved slabs or stiff sheets
    • E04D3/02—Roof covering by making use of flat or curved slabs or stiff sheets of plane slabs, slates, or sheets, or in which the cross-section is unimportant
    • E04D3/06—Roof covering by making use of flat or curved slabs or stiff sheets of plane slabs, slates, or sheets, or in which the cross-section is unimportant of glass or other translucent material; Fixing means therefor
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D3/00—Roof covering by making use of flat or curved slabs or stiff sheets
    • E04D3/02—Roof covering by making use of flat or curved slabs or stiff sheets of plane slabs, slates, or sheets, or in which the cross-section is unimportant
    • E04D3/06—Roof covering by making use of flat or curved slabs or stiff sheets of plane slabs, slates, or sheets, or in which the cross-section is unimportant of glass or other translucent material; Fixing means therefor
    • E04D3/14—Roof covering by making use of flat or curved slabs or stiff sheets of plane slabs, slates, or sheets, or in which the cross-section is unimportant of glass or other translucent material; Fixing means therefor with glazing bars of other material, e.g. of glass
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D3/00—Roof covering by making use of flat or curved slabs or stiff sheets
    • E04D3/02—Roof covering by making use of flat or curved slabs or stiff sheets of plane slabs, slates, or sheets, or in which the cross-section is unimportant
    • E04D3/06—Roof covering by making use of flat or curved slabs or stiff sheets of plane slabs, slates, or sheets, or in which the cross-section is unimportant of glass or other translucent material; Fixing means therefor
    • E04D3/08—Roof covering by making use of flat or curved slabs or stiff sheets of plane slabs, slates, or sheets, or in which the cross-section is unimportant of glass or other translucent material; Fixing means therefor with metal glazing bars
    • E04D2003/0868—Mutual connections and details of glazing bars
    • E04D2003/0875—Mutual connections and details of glazing bars on the ridge of the roof or on intersecting roof parts

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Roof Covering Using Slabs Or Stiff Sheets (AREA)
  • Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
  • Body Structure For Vehicles (AREA)
  • Building Environments (AREA)
  • Floor Finish (AREA)
  • Sealing Battery Cases Or Jackets (AREA)
  • Finishing Walls (AREA)

Abstract

An end cap (74) for ducted plastics panels (72) comprises a channel section member (80) having an intended upper side (82) and an intended lower side (83), the upper side including a co-extruded gasket, whereby when the end cap is pushed onto a plastics panel, the gasket lies on the panel surface to limit passage of water past the gasket. Extending upwardly from the upper side wall of the channel section is a rail baffle (88).

Description

2283997 1 TITLE: Installation of roofing panels
DESCRIPTION
This invention concerns installation of roofing panels.
Conservatories and like structures can have a roof structure comprising parallel glazing bars extending from one or both sides of a ridge member with glazing panels supported between the glazing bars. A common glazing material is polycarbonate sheeting, which may have two or three skins joined at their edges and intermediate their edges to form longitudinal ducts through the panels. When such panels are fitted to a conservatory roof, the ends of the panels are sealed with a breather tape to prevent ingress of water into the ducts of the panels. The ends of the panels are then covered with a simple polycarbonate cap however, polycarbonate panels are generally not as flat as glass panes, so that some ingress of water is still possible between the polycarbonate panels and their end caps, which eventually finds its way into the polycarbonate panels themselves.
An object of this invention is to provide a means for preventing the foresaid ingress of water into glazing panels of the ducted type.
1 1 2 According to the invention, there is provided an end cap for ducted plastic panels, which comprises a channel section member having an intended upper side and an intended lower side, the upper side including a coextruded gasket, whereby when the end cap is pushed on to a plastics panel, the gasket lies on the panel surface to limit the passage of water past the gasket.
In a first preferred embodiment of the invention an end cap comprises a channel section member having upper and lower sides which converge over at least part of their length, the upper side having at its free edge a co-extruded gasket and the lower side having its free edge curving away from the upper side over a part of its height. The lower side preferably includes weep holes spaced along its length preferably adjacent to the base of the channel member. Within the channel member, there are preferably provided one or more projections to act as stops for a panel onto which the end cap is fitted. The projection or projections preferably extend downwardly from the upper side of the wall of the channel member, preferably at right angles thereto.
In a second preferred embodiment of the invention an end cap for a glazing panel comprises a channel section for receiving an end of a glazing panel, which section includes one or more co-extruded sealing strips along an upper side wall of the channel. The sealing r 3 strips are preferably directed inwardly. The lower side wall of the channel section preferably has the coextruded gasket along its free edge.
Extending upwardly from the upper side wall of 5 the channel section, there is preferably a rain baffle. A preferred rain baffle comprises a first web which extends upwardly from the upper side wall of the channel member and a second web which is connected to the first member by a resilient flexible coupling, whereby the 10 second web is normally urged to overlie the first web. In use, the second web is raised until glazing bars are fitted, usually up against the first web, when the second web is released to lie on top of the glazing bars. The two webs together provide a rain baffle which 15 prevents water being driven behind the end cap.
This invention will now be further described, by way of example only, with reference to the accompanying drawings, in which:
Figure 1 is section through an end cap according 20 to a first embodiment of the invention; and Figure 2 shows the end cap of Figure 1 fitted to a ducted plastics panel; and Figure 3 shows a ridge assembly for a conservatory, which includes end caps of a second embodiment of the invention.
Referring to figures 1 and 2 of the accompanying % PP 4 drawings, an end cap 10 for a polycarbonate glazing panel 13 comprises a channel section member having an upper side wall 12, a base 14 and a lower side wall 16. the upper and lower side walls converge slightly away from the base over a major height of the lower side wall whereafter the lower side wall curves away from the upper side wall at 18.
The upper side wall has along its free edge a coextruded gasket of rubber or synthetic elastomeric material 20. The gasket narrows towards its free edge and is angled downwards slightly relative to the upper side wall 12. Near its junction with the base, the upper side wall has an internal rib 22, which acts as a stop for the polycarbonate panel 11 pushed into the end cap.
The lower side wall has near its junction with the base a series of spaced weep holes 24 along its length, whereby any moisture entering the end cap can escape under gravity.
The base of the end cap is shown continuing below the lower side wall to provide a foot 26.
In use, the end cap 10 is pushed onto the end of the polycarbonate glazing panel 11. The curving of the lower side wall facilitates the insertion of the glazing panel past the gasket. The end cap is pushed on to the glazing panel until the glazing panel contacts the rib c 11 r r- ' 22. In the fitted position, the gasket 20 lies on the top surface of the glazing panel to prevent passage of water into the end cap. The glazing panel shown is one that does not have a flat top surface but has arcuate sections over each duct. The gasket, therefore, follows the contours of the top surface of the panel.
Turning now to figure 2 of the accompanying drawings, a ridge system for a conservatory comprises a ridge beam 50 supported at each end. The ridge beam is of box section and has side panels 52 indented at 54 to provide locations for glazing panel ends. The box section of the ridge beam is open but covered by a first cap 56 and by a capping 58, which is secured to the beam by means of a bolt 60, which has a head 62 that locates in the formation 64 on the underside of the capping and which passes through the base of the ridge beam to be secured in place by a wing nut 70.
Polycarbonate glazing panels 72 are provided with end caps 74, which are fitted into the indentations of the side panels of the ridge beam. The end caps comprise channel section 80 which has an upper side wall 82 with two sealing strips of rubber or elastomeric material depending therefrom. The lower side wall also has a sealing strip extending from its free edge. Extending at right angles from the upper side wall of the end cap is a rain baffle 88 which comprises a first r 6 web 90 fixed relative to the upper side wall of the end cap and second web 92 which is connected to the first web by flexible resilient material, whereby the second web tends to overlie the first web. On the underside of the lower side wall of the end cap and on the rear face of the first web of the rain baffle are retaining ribs 94 and 96 respectively, which locate behind cooperating ribs 98 and 100 respectively at the mouth of the indentation of the side panel of the ridge beam, whereby the end caps can be pushed-fitted into the indentation of the ridge beam.
In use, the end caps are either fitted to the ridge beam first and the polycarbonate glazing panels fitted to the end caps or the end caps may be fitted first to the polycarbonate panel and then the assembly fitted to the ridge beam. Then, when glazing bars 102 are to be added to secure the glazing panels, the second web of the rain baffle is lifted, so that the glazing bars can be positioned and then released to rest on the glazing bars. The first and second webs of the rain baffle then prevent water ingress passed the end caps by deflecting rain water back on itself to run back down the glazing panels to guttering.
r 7

Claims (12)

1. An end cap for ducted plastics panels, which comprises a channel section member having an intended upper side and an intended lower side, the upper side including a co-extruded gasket, whereby, when the end cap is pushed onto a plastics panel, the gasket lies on the panel surface to limit passage of water past the gasket.
2. An end cap as claimed in claim 1 wherein the 10 channel section member has upper and lower sides which converge over at least part of their length, the upper side having at its free edge a co-extruded gasket and the lower side having its free curving away from the upper side over a part of its height.
3. An end cap as claimed in claim 1 or 2, wherein the lower side includes weep holes spaced along its length.
4. An end cap as claimed in claim 3, wherein the weep holes are adjacent to the base of the channel member.
5. An end cap as claimed in any one of claims 1 to 4, having within the channel one or more projections to act as stops for a panel onto which the end cap is fitted.
6.
An end cap as claimed in claim 5, wherein the 1 or 8 projections extend downwardly from the upper side wall of the channel member.
7. An end cap as claimed in claim 6, wherein the projections extend at right angles to the upper side 5 wall of the channel member.
8. An end cap as claimed in claim 1, comprising a channel section for receiving an end of a glazing panel, which section includes one or more coextruded sealing strips along an upper side wall of the channel.
9. An end cap as claimed in claim 8, wherein the sealing strips are directed inwardly.
10. An end cap as claimed in claim 8 or 9, wherein - the lower side wall of the channel sectionhas the coextruded gasket along its free edge.
11. An end cap as claimed in claim 8, 9 or 10, wherein extending upwardly from the upper side wall of the channel section is a rain baffle.
12. An end cap as claimed in claim 11, wherein the rain baffle comprises a first web which extends upwardly from the upper side wall of the channel member and a second web which is connected to the first member by a resilient flexible coupling, whereby the second web is normally urged to overlie the first web.
A
GB9418813A 1993-09-18 1994-09-19 Installataion of roofing panels Expired - Lifetime GB2283997B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9613202A GB2299596B (en) 1993-09-18 1994-09-19 Installation of roofing panels

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB939319349A GB9319349D0 (en) 1993-09-18 1993-09-18 Installation of roofing panels

Publications (3)

Publication Number Publication Date
GB9418813D0 GB9418813D0 (en) 1994-11-09
GB2283997A true GB2283997A (en) 1995-05-24
GB2283997B GB2283997B (en) 1997-01-08

Family

ID=10742203

Family Applications (3)

Application Number Title Priority Date Filing Date
GB939319349A Pending GB9319349D0 (en) 1993-09-18 1993-09-18 Installation of roofing panels
GB9613202A Expired - Lifetime GB2299596B (en) 1993-09-18 1994-09-19 Installation of roofing panels
GB9418813A Expired - Lifetime GB2283997B (en) 1993-09-18 1994-09-19 Installataion of roofing panels

Family Applications Before (2)

Application Number Title Priority Date Filing Date
GB939319349A Pending GB9319349D0 (en) 1993-09-18 1993-09-18 Installation of roofing panels
GB9613202A Expired - Lifetime GB2299596B (en) 1993-09-18 1994-09-19 Installation of roofing panels

Country Status (6)

Country Link
EP (2) EP0644305B1 (en)
AT (2) ATE180859T1 (en)
DE (2) DE69429370T2 (en)
DK (2) DK0644305T3 (en)
ES (2) ES2167673T3 (en)
GB (3) GB9319349D0 (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2296265A (en) * 1994-12-21 1996-06-26 Newdawn & Sun Ltd Closure for multi-layer panel
GB2312916A (en) * 1996-05-08 1997-11-12 Allport Brian Glazing sheet edge gripping and sealing member
GB2335675A (en) * 1998-03-27 1999-09-29 Cdw Products Ltd An adjustable ridge assembly for a conservatory roof
GB2310870B (en) * 1996-03-09 1999-12-15 Ultraframe Plc Roof ridge assemblies
GB2347944A (en) * 1999-03-17 2000-09-20 Ultraframe Uk Ltd End cap for a multi-layer panel
GB2374353A (en) * 2001-03-02 2002-10-16 Marston & Langinger Ltd Ventilation and drainage of glazed roof, e.g. of conservatory
EP1396588A1 (en) 2002-09-06 2004-03-10 Aspect Management Ltd Conservatory structures
WO2004079118A1 (en) 2003-03-01 2004-09-16 Ultraframe (Uk) Limited End cap for roofing panels
US7191566B2 (en) 2003-02-25 2007-03-20 Park Lane Conservatories Ltd. Eaves beam with internal drainage
US7836641B2 (en) 2002-12-16 2010-11-23 Park Lane Conservatories Ltd. Multi-piece eaves beam for preassembled glazed roof system

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2339441B (en) * 1996-03-09 2000-03-22 Ultraframe Uk Ltd Roof ridge assemblies
NL1008048C2 (en) * 1998-01-16 1999-07-19 Ubbink Nederland Bv Hidden gutter for dormer window
MXPA01008635A (en) * 1999-12-30 2004-04-21 Carrier Corp Extruded channel for insulating panel construction.
GB0000003D0 (en) 2000-01-05 2000-02-23 Ultraframe Uk Ltd Building elements
US7392622B2 (en) 2002-10-22 2008-07-01 Park Lane Conservatories Limited Conservatory roof with a soffit system
AU2003902406A0 (en) * 2003-05-19 2003-06-05 Erling, Peter S. Additional components of framing system for solar panels
US7392623B2 (en) 2004-02-03 2008-07-01 Park Lane Conservatories Ltd. Eaves beam with framing
GB0816261D0 (en) * 2008-09-06 2008-10-15 Makin Stephen J Roof edging device
IL213495A0 (en) * 2011-06-12 2011-07-31 Polygal Plastics Ind Ltd Panel connector with incorporated flexible end
US10011991B2 (en) * 2011-10-07 2018-07-03 Sabic Global Technologies B.V. Multiwall sheet, methods of making, and articles comprising the multiwall sheet
NL1043276B1 (en) * 2019-05-31 2020-12-08 Alcomij Beheer Bv A method for constructing a greenhouse, as well as a connecting element and a greenhouse

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3717955A (en) * 1972-01-10 1973-02-27 Met L Wood Corp Panel seal
EP0089461A2 (en) * 1982-03-19 1983-09-28 Fischerwerke Arthur Fischer GmbH & Co. KG Seal for the ends and edges of external panels
US4756127A (en) * 1986-05-30 1988-07-12 National Greenhouse Company Universal framing system for glazing and method of using same
GB2267298A (en) * 1992-05-28 1993-12-01 Newdawn & Sun Ltd Closing edge faces of multi-layer panels
GB2275948A (en) * 1993-03-13 1994-09-14 Ultraframe Plc Sealing roofing panels against ridge member

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BE571759A (en) *
GB106069A (en) * 1917-01-15 1917-05-10 Walter John Gregory Improved Lead Glazing.
FR1277074A (en) * 1960-12-23 1961-11-24 Thermoplastic frame intended in particular for the construction of greenhouses
FR2528103A1 (en) * 1982-06-07 1983-12-09 Gau Yves Frame for veranda roof - uses independent modular frames with pivoting coupling of frame to wall profile
DE3529971A1 (en) * 1985-08-22 1987-03-05 Tegtmeier Metallbau Terrace roofing
DE8601745U1 (en) * 1986-01-24 1986-12-18 Stahl, Fred, 7000 Stuttgart Extension, such as a winter garden, solar extension, etc., to a residential building
DE8617671U1 (en) * 1986-07-02 1986-08-14 Schuster, Hans, 31171 Nordstemmen Closing strip for twin-wall sheets
DE3809704A1 (en) * 1988-03-23 1989-10-12 Prokuwa Kunststoff Gmbh Mounting device for roof and wall panels
US5065562A (en) * 1990-01-29 1991-11-19 The Standard Products Company Sealing and fastening system for greenhouses
EP0513934A1 (en) * 1991-06-07 1992-11-19 P.L.J. Bom Beheer B.V. Glasshouse

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3717955A (en) * 1972-01-10 1973-02-27 Met L Wood Corp Panel seal
EP0089461A2 (en) * 1982-03-19 1983-09-28 Fischerwerke Arthur Fischer GmbH & Co. KG Seal for the ends and edges of external panels
US4756127A (en) * 1986-05-30 1988-07-12 National Greenhouse Company Universal framing system for glazing and method of using same
GB2267298A (en) * 1992-05-28 1993-12-01 Newdawn & Sun Ltd Closing edge faces of multi-layer panels
GB2275948A (en) * 1993-03-13 1994-09-14 Ultraframe Plc Sealing roofing panels against ridge member

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2296265B (en) * 1994-12-21 1998-07-15 Newdawn & Sun Ltd Closure for multi-layer panel
GB2296265A (en) * 1994-12-21 1996-06-26 Newdawn & Sun Ltd Closure for multi-layer panel
GB2310870B (en) * 1996-03-09 1999-12-15 Ultraframe Plc Roof ridge assemblies
GB2312916B (en) * 1996-05-08 1999-12-15 Allport Brian Gripping member for a glazing sheet
GB2312916A (en) * 1996-05-08 1997-11-12 Allport Brian Glazing sheet edge gripping and sealing member
GB2335675B (en) * 1998-03-27 2000-11-15 Cdw Products Ltd Ridge assembly
GB2335675A (en) * 1998-03-27 1999-09-29 Cdw Products Ltd An adjustable ridge assembly for a conservatory roof
GB2347944A (en) * 1999-03-17 2000-09-20 Ultraframe Uk Ltd End cap for a multi-layer panel
WO2000055447A1 (en) 1999-03-17 2000-09-21 Ultraframe (Uk) Limited Installation of roofing panels
GB2374353A (en) * 2001-03-02 2002-10-16 Marston & Langinger Ltd Ventilation and drainage of glazed roof, e.g. of conservatory
GB2374353B (en) * 2001-03-02 2004-06-02 Marston & Langinger Ltd Glazed roofing systems
EP1396588A1 (en) 2002-09-06 2004-03-10 Aspect Management Ltd Conservatory structures
US7836641B2 (en) 2002-12-16 2010-11-23 Park Lane Conservatories Ltd. Multi-piece eaves beam for preassembled glazed roof system
US7191566B2 (en) 2003-02-25 2007-03-20 Park Lane Conservatories Ltd. Eaves beam with internal drainage
WO2004079118A1 (en) 2003-03-01 2004-09-16 Ultraframe (Uk) Limited End cap for roofing panels
GB2399103B (en) * 2003-03-01 2006-05-17 Ultraframe Uk Ltd Installation of roofing panels

Also Published As

Publication number Publication date
ATE210232T1 (en) 2001-12-15
GB9319349D0 (en) 1993-11-03
ATE180859T1 (en) 1999-06-15
GB2299596B (en) 1997-01-08
GB2283997B (en) 1997-01-08
GB2299596A (en) 1996-10-09
DE69418803D1 (en) 1999-07-08
GB9418813D0 (en) 1994-11-09
ES2133492T3 (en) 1999-09-16
EP0644305A1 (en) 1995-03-22
DE69418803T2 (en) 1999-10-14
DE69429370D1 (en) 2002-01-17
DE69429370T2 (en) 2002-07-18
ES2167673T3 (en) 2002-05-16
EP0790368A1 (en) 1997-08-20
EP0644305B1 (en) 1999-06-02
GB9613202D0 (en) 1996-08-28
EP0790368B1 (en) 2001-12-05
DK0644305T3 (en) 1999-12-13
DK0790368T3 (en) 2002-03-25

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Legal Events

Date Code Title Description
772C Application made to the comptroller for revocation (sect. 72/1977)
772E Application withdrawn (sect. 72/1977) [revocation]
7276 Counter claim for revocation lodged in the pat. court (section 72)
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
772N Proceeding under section 72 patents act 1977

Free format text: CLAIM DISCONTINUED

PE20 Patent expired after termination of 20 years

Expiry date: 20140918