PL81986B1 - - Google Patents
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- Publication number
- PL81986B1 PL81986B1 PL1972155593A PL15559372A PL81986B1 PL 81986 B1 PL81986 B1 PL 81986B1 PL 1972155593 A PL1972155593 A PL 1972155593A PL 15559372 A PL15559372 A PL 15559372A PL 81986 B1 PL81986 B1 PL 81986B1
- Authority
- PL
- Poland
- Prior art keywords
- chamber
- electric field
- heating
- plates
- plate
- Prior art date
Links
- 238000010438 heat treatment Methods 0.000 claims description 52
- 239000000463 material Substances 0.000 claims description 45
- 230000005684 electric field Effects 0.000 claims description 30
- 239000004020 conductor Substances 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims description 5
- 239000012777 electrically insulating material Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 3
- 239000003990 capacitor Substances 0.000 description 6
- 230000005855 radiation Effects 0.000 description 4
- 239000011159 matrix material Substances 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 238000007907 direct compression Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000002500 effect on skin Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- -1 for example Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000012815 thermoplastic material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
- B29C65/1429—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation characterised by the way of heating the interface
- B29C65/1464—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation characterised by the way of heating the interface making use of several radiators
- B29C65/1467—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation characterised by the way of heating the interface making use of several radiators at the same time, i.e. simultaneous welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
- B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
- B29C59/02—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
- B29C65/1403—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation characterised by the type of electromagnetic or particle radiation
- B29C65/1425—Microwave radiation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
- B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
- B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
- B29C66/542—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles joining hollow covers or hollow bottoms to open ends of container bodies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
- B29C66/818—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps
- B29C66/8185—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps comprising means for compensating for the thermal expansion of the welding jaws or of the clamps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
- B29C66/818—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps
- B29C66/8187—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps characterised by the electrical insulating constructional aspects
- B29C66/81871—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps characterised by the electrical insulating constructional aspects of the welding jaws
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/82—Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools or clamps
- B29C66/824—Actuating mechanisms
- B29C66/8242—Pneumatic or hydraulic drives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
- B29C66/832—Reciprocating joining or pressing tools
- B29C66/8322—Joining or pressing tools reciprocating along one axis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/87—Auxiliary operations or devices
- B29C66/874—Safety measures or devices
- B29C66/8742—Safety measures or devices for operators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
- B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
- B29C35/0805—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation
- B29C2035/0855—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation using microwave
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
- B29C66/112—Single lapped joints
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
- B29C66/131—Single flanged joints, i.e. one of the parts to be joined being rigid and flanged in the joint area
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Thermal Sciences (AREA)
- Electromagnetism (AREA)
- Toxicology (AREA)
- Fluid Mechanics (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Constitution Of High-Frequency Heating (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Press Drives And Press Lines (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US14708371A | 1971-05-26 | 1971-05-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| PL81986B1 true PL81986B1 (en:Method) | 1975-10-31 |
Family
ID=22520240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PL1972155593A PL81986B1 (en:Method) | 1971-05-26 | 1972-05-25 |
Country Status (17)
| Country | Link |
|---|---|
| US (1) | US3742180A (en:Method) |
| AT (1) | AT329162B (en:Method) |
| AU (1) | AU468042B2 (en:Method) |
| CA (1) | CA947824A (en:Method) |
| CH (1) | CH547599A (en:Method) |
| DD (1) | DD100429A5 (en:Method) |
| DE (1) | DE2224081A1 (en:Method) |
| ES (1) | ES403593A1 (en:Method) |
| FR (1) | FR2139073B1 (en:Method) |
| GB (1) | GB1381635A (en:Method) |
| HU (1) | HU168327B (en:Method) |
| IT (1) | IT955780B (en:Method) |
| NL (1) | NL7206881A (en:Method) |
| PL (1) | PL81986B1 (en:Method) |
| SE (1) | SE373310B (en:Method) |
| SU (1) | SU558627A3 (en:Method) |
| ZA (1) | ZA723588B (en:Method) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3845269A (en) * | 1973-05-24 | 1974-10-29 | Usm Corp | Adjustable timing device |
| US4205210A (en) * | 1974-12-20 | 1980-05-27 | Usm Corporation | High frequency cavity press |
| US4036676A (en) * | 1975-04-14 | 1977-07-19 | William Pennington | Heat sealing of plastic sheets |
| US4362918A (en) * | 1980-10-30 | 1982-12-07 | Simon Rabin | Radiation absorbing apparatus |
| US5709842A (en) * | 1989-10-13 | 1998-01-20 | Stericycle, Inc. | Apparatus and method for processing medical waste |
| US5508004A (en) * | 1989-10-13 | 1996-04-16 | Stericycle, Inc. | Apparatus and method for processing medical waste |
| CA2079331A1 (en) * | 1990-03-30 | 1991-10-01 | Jack Edgar Bridges | Method and apparatus for rendering medical materials safe |
| US5516466A (en) * | 1994-10-27 | 1996-05-14 | Armstrong International, Inc. | Steam humidifier system |
| US5641423A (en) * | 1995-03-23 | 1997-06-24 | Stericycle, Inc. | Radio frequency heating apparatus for rendering medical materials |
| US5973308A (en) * | 1997-08-05 | 1999-10-26 | Rockwell Science Center, Inc. | Efficient dielectric heater |
| US6248985B1 (en) | 1998-06-01 | 2001-06-19 | Stericycle, Inc. | Apparatus and method for the disinfection of medical waste in a continuous manner |
| US6794624B2 (en) * | 2002-03-06 | 2004-09-21 | John W. Dozier | Microprocessor controlled tube apparatus having reduced radio frequency emanations |
| US7326898B2 (en) * | 2004-08-17 | 2008-02-05 | State Technology, Inc. | Method and apparatus for closing or severing a tube using a controllable closure force |
| CN116118198B (zh) * | 2022-12-12 | 2025-08-05 | 江苏集萃碳纤维及复合材料应用技术研究院有限公司 | 一种双稳态复合材料管连续化模压生产系统 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3205114A (en) * | 1962-01-26 | 1965-09-07 | Sealomatic Electronics Corp | Heat sealing and vacuum operated die cutting device |
| US3401248A (en) * | 1965-10-20 | 1968-09-10 | Ford Motor Co | Dielectric die |
| US3357108A (en) * | 1966-05-11 | 1967-12-12 | Fitchburg Paper | Mobile dielectric drying apparatus with energy source coupling means |
| US3469054A (en) * | 1967-03-15 | 1969-09-23 | Bangor Punta Operations Inc | Shielded dielectric heating apparatus |
-
1971
- 1971-05-26 US US00147083A patent/US3742180A/en not_active Expired - Lifetime
-
1972
- 1972-03-06 CA CA136,386A patent/CA947824A/en not_active Expired
- 1972-05-17 DE DE19722224081 patent/DE2224081A1/de active Pending
- 1972-05-18 SU SU1785249A patent/SU558627A3/ru active
- 1972-05-18 CH CH743072A patent/CH547599A/xx not_active IP Right Cessation
- 1972-05-20 NL NL7206881A patent/NL7206881A/xx not_active Application Discontinuation
- 1972-05-24 AU AU42653/72A patent/AU468042B2/en not_active Expired
- 1972-05-24 IT IT24742/72A patent/IT955780B/it active
- 1972-05-25 ES ES403593A patent/ES403593A1/es not_active Expired
- 1972-05-25 AT AT454272A patent/AT329162B/de not_active IP Right Cessation
- 1972-05-25 HU HUUA192A patent/HU168327B/hu unknown
- 1972-05-25 PL PL1972155593A patent/PL81986B1/pl unknown
- 1972-05-25 SE SE7206841A patent/SE373310B/xx unknown
- 1972-05-25 ZA ZA723588A patent/ZA723588B/xx unknown
- 1972-05-25 GB GB2456472A patent/GB1381635A/en not_active Expired
- 1972-05-25 FR FR7218756A patent/FR2139073B1/fr not_active Expired
- 1972-05-26 DD DD163229A patent/DD100429A5/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| SU558627A3 (ru) | 1977-05-15 |
| CA947824A (en) | 1974-05-21 |
| ATA454272A (de) | 1975-07-15 |
| FR2139073B1 (en:Method) | 1976-01-16 |
| ZA723588B (en) | 1973-04-25 |
| FR2139073A1 (en:Method) | 1973-01-05 |
| US3742180A (en) | 1973-06-26 |
| HU168327B (en:Method) | 1976-03-28 |
| CH547599A (de) | 1974-03-29 |
| NL7206881A (en:Method) | 1972-11-28 |
| AU468042B2 (en) | 1975-12-18 |
| GB1381635A (en) | 1975-01-22 |
| AT329162B (de) | 1976-04-26 |
| ES403593A1 (es) | 1975-05-16 |
| DE2224081A1 (de) | 1972-12-07 |
| SE373310B (sv) | 1975-02-03 |
| IT955780B (it) | 1973-09-29 |
| DD100429A5 (en:Method) | 1973-09-20 |
| AU4265372A (en) | 1973-11-29 |
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