DK115124B - Program-controlled communication switching system. - Google Patents

Program-controlled communication switching system.

Info

Publication number
DK115124B
DK115124B DK507064AA DK507064A DK115124B DK 115124 B DK115124 B DK 115124B DK 507064A A DK507064A A DK 507064AA DK 507064 A DK507064 A DK 507064A DK 115124 B DK115124 B DK 115124B
Authority
DK
Denmark
Prior art keywords
program
switching system
communication switching
controlled communication
controlled
Prior art date
Application number
DK507064AA
Other languages
Danish (da)
Inventor
A Doblmaier
R Downing
F Taylor
W Ulrich
H May
J Nowak
M Fabisch
J Harr
Original Assignee
Western Electric Co
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
Application filed by Western Electric Co filed Critical Western Electric Co
Publication of DK115124B publication Critical patent/DK115124B/en

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/46—Multiprogramming arrangements
    • G06F9/48—Program initiating; Program switching, e.g. by interrupt
    • G06F9/4806—Task transfer initiation or dispatching
    • G06F9/4812—Task transfer initiation or dispatching by interrupt, e.g. masked
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/0703—Error or fault processing not based on redundancy, i.e. by taking additional measures to deal with the error or fault not making use of redundancy in operation, in hardware, or in data representation
    • G06F11/0751—Error or fault detection not based on redundancy
    • G06F11/0754—Error or fault detection not based on redundancy by exceeding limits
    • G06F11/0757—Error or fault detection not based on redundancy by exceeding limits by exceeding a time limit, i.e. time-out, e.g. watchdogs
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/08—Error detection or correction by redundancy in data representation, e.g. by using checking codes
    • G06F11/10—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's
    • G06F11/1008—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's in individual solid state devices
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/14—Error detection or correction of the data by redundancy in operation
    • G06F11/1402—Saving, restoring, recovering or retrying
    • G06F11/1405—Saving, restoring, recovering or retrying at machine instruction level
    • G06F11/141—Saving, restoring, recovering or retrying at machine instruction level for bus or memory accesses
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/16—Error detection or correction of the data by redundancy in hardware
    • G06F11/1629—Error detection by comparing the output of redundant processing systems
    • G—PHYSICS
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    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/16—Error detection or correction of the data by redundancy in hardware
    • G06F11/1629—Error detection by comparing the output of redundant processing systems
    • G06F11/1633—Error detection by comparing the output of redundant processing systems using mutual exchange of the output between the redundant processing components
    • G—PHYSICS
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    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/16—Error detection or correction of the data by redundancy in hardware
    • G06F11/1629—Error detection by comparing the output of redundant processing systems
    • G06F11/1641—Error detection by comparing the output of redundant processing systems where the comparison is not performed by the redundant processing components
    • G—PHYSICS
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    • G06F11/00—Error detection; Error correction; Monitoring
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    • G06F11/16—Error detection or correction of the data by redundancy in hardware
    • G06F11/1629—Error detection by comparing the output of redundant processing systems
    • G06F11/1641—Error detection by comparing the output of redundant processing systems where the comparison is not performed by the redundant processing components
    • G06F11/1645—Error detection by comparing the output of redundant processing systems where the comparison is not performed by the redundant processing components and the comparison itself uses redundant hardware
    • G—PHYSICS
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    • G06F11/16—Error detection or correction of the data by redundancy in hardware
    • G06F11/1629—Error detection by comparing the output of redundant processing systems
    • G06F11/165—Error detection by comparing the output of redundant processing systems with continued operation after detection of the error
    • G—PHYSICS
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    • G06F11/00—Error detection; Error correction; Monitoring
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    • G06F11/16—Error detection or correction of the data by redundancy in hardware
    • G06F11/1629—Error detection by comparing the output of redundant processing systems
    • G06F11/1654—Error detection by comparing the output of redundant processing systems where the output of only one of the redundant processing components can drive the attached hardware, e.g. memory or I/O
    • G—PHYSICS
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    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/16—Error detection or correction of the data by redundancy in hardware
    • G06F11/1666—Error detection or correction of the data by redundancy in hardware where the redundant component is memory or memory area
    • G—PHYSICS
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    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/16—Error detection or correction of the data by redundancy in hardware
    • G06F11/1675—Temporal synchronisation or re-synchronisation of redundant processing components
    • G06F11/1679—Temporal synchronisation or re-synchronisation of redundant processing components at clock signal level
    • G—PHYSICS
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    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
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    • G06F11/16—Error detection or correction of the data by redundancy in hardware
    • G06F11/1675—Temporal synchronisation or re-synchronisation of redundant processing components
    • G06F11/1687—Temporal synchronisation or re-synchronisation of redundant processing components at event level, e.g. by interrupt or result of polling
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/16—Error detection or correction of the data by redundancy in hardware
    • G06F11/20—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/16—Error detection or correction of the data by redundancy in hardware
    • G06F11/20—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements
    • G06F11/202—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where processing functionality is redundant
    • G06F11/2023—Failover techniques
    • G06F11/2033—Failover techniques switching over of hardware resources
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/16—Error detection or correction of the data by redundancy in hardware
    • G06F11/20—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements
    • G06F11/202—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where processing functionality is redundant
    • G06F11/2043—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where processing functionality is redundant where the redundant components share a common memory address space
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F15/00—Digital computers in general; Data processing equipment in general
    • G06F15/16—Combinations of two or more digital computers each having at least an arithmetic unit, a program unit and a register, e.g. for a simultaneous processing of several programs
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/30—Arrangements for executing machine instructions, e.g. instruction decode
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/30—Arrangements for executing machine instructions, e.g. instruction decode
    • G06F9/30003—Arrangements for executing specific machine instructions
    • G06F9/30007—Arrangements for executing specific machine instructions to perform operations on data operands
    • G06F9/30018—Bit or string instructions
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/30—Arrangements for executing machine instructions, e.g. instruction decode
    • G06F9/38—Concurrent instruction execution, e.g. pipeline or look ahead
    • G06F9/3867—Concurrent instruction execution, e.g. pipeline or look ahead using instruction pipelines
    • G06F9/3875—Pipelining a single stage, e.g. superpipelining
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/46—Multiprogramming arrangements
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/46—Multiprogramming arrangements
    • G06F9/48—Program initiating; Program switching, e.g. by interrupt
    • G06F9/4806—Task transfer initiation or dispatching
    • G06F9/4812—Task transfer initiation or dispatching by interrupt, e.g. masked
    • G06F9/4825—Interrupt from clock, e.g. time of day
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker
    • H04Q3/54—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker in which the logic circuitry controlling the exchange is centralised
    • H04Q3/545—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker in which the logic circuitry controlling the exchange is centralised using a stored programme
    • H04Q3/54541—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker in which the logic circuitry controlling the exchange is centralised using a stored programme using multi-processor systems
    • H04Q3/5455—Multi-processor, parallelism, distributed systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker
    • H04Q3/54—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker in which the logic circuitry controlling the exchange is centralised
    • H04Q3/545—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker in which the logic circuitry controlling the exchange is centralised using a stored programme
    • H04Q3/54575—Software application
    • H04Q3/54591—Supervision, e.g. fault localisation, traffic measurements, avoiding errors, failure recovery, monitoring, statistical analysis
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/16—Error detection or correction of the data by redundancy in hardware
    • G06F11/20—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements
    • G06F11/2002—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where interconnections or communication control functionality are redundant
    • G06F11/2007—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where interconnections or communication control functionality are redundant using redundant communication media
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2201/00—Indexing scheme relating to error detection, to error correction, and to monitoring
    • G06F2201/845—Systems in which the redundancy can be transformed in increased performance

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Quality & Reliability (AREA)
  • Software Systems (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Computer Hardware Design (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Exchange Systems With Centralized Control (AREA)
  • Executing Machine-Instructions (AREA)
DK507064AA 1963-12-31 1964-10-14 Program-controlled communication switching system. DK115124B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US33487563A 1963-12-31 1963-12-31

Publications (1)

Publication Number Publication Date
DK115124B true DK115124B (en) 1969-09-08

Family

ID=23309246

Family Applications (4)

Application Number Title Priority Date Filing Date
DK507264AA DK114415B (en) 1963-12-31 1964-10-14 Communication switchgear.
DK506864AA DK136007B (en) 1963-12-31 1964-10-14 Program-controlled data processor.
DK506964AA DK136878B (en) 1963-12-31 1964-10-14 Program-driven data processor arrangement.
DK507064AA DK115124B (en) 1963-12-31 1964-10-14 Program-controlled communication switching system.

Family Applications Before (3)

Application Number Title Priority Date Filing Date
DK507264AA DK114415B (en) 1963-12-31 1964-10-14 Communication switchgear.
DK506864AA DK136007B (en) 1963-12-31 1964-10-14 Program-controlled data processor.
DK506964AA DK136878B (en) 1963-12-31 1964-10-14 Program-driven data processor arrangement.

Country Status (13)

Country Link
US (1) US3570008A (en)
JP (1) JPS514062B1 (en)
AT (7) AT269518B (en)
BE (7) BE654492A (en)
BR (4) BR6463327D0 (en)
CH (7) CH479993A (en)
DE (6) DE1474094B (en)
DK (4) DK114415B (en)
FR (7) FR1442298A (en)
GB (7) GB1081811A (en)
IL (7) IL22242A (en)
NL (8) NL145065B (en)
SE (4) SE326990B (en)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3723975A (en) * 1971-06-28 1973-03-27 Ibm Overdue event detector
US3737870A (en) * 1972-04-24 1973-06-05 Ibm Status switching arrangement
US3892928A (en) * 1973-10-09 1975-07-01 Bell Telephone Labor Inc Switching system equipped with line verification apparatus
US4053751A (en) * 1976-04-28 1977-10-11 Bell Telephone Laboratories, Incorporated Adaptable exerciser for a memory system
US4048452A (en) * 1976-05-28 1977-09-13 Bell Telephone Laboratories, Incorporated Automatic call distribution system
DE2849371A1 (en) * 1978-11-14 1980-05-29 Siemens Ag METHOD FOR TRANSMITTING INFORMATION BETWEEN FACILITIES OF AN INDIRECTLY CONTROLLED SWITCHING SYSTEM, IN PARTICULAR TELEPHONE SWITCHING SYSTEM
US4345116A (en) * 1980-12-31 1982-08-17 Bell Telephone Laboratories, Incorporated Dynamic, non-hierarchical arrangement for routing traffic
US4583198A (en) * 1981-05-06 1986-04-15 Japan Electronic Control Systems Company, Limited Computer program run-away supervisory circuit and method
US4484030A (en) * 1982-04-19 1984-11-20 At&T Bell Laboratories Method and apparatus for identifying faulty communications circuits
US4565903A (en) * 1983-08-03 1986-01-21 At&T Bell Laboratories Telephone interexchange carrier selection
US4577066A (en) * 1983-08-03 1986-03-18 At&T Bell Laboratories Telephone interexchange call routing
US4555594A (en) * 1983-08-03 1985-11-26 At&T Bell Laboratories Telephone interexchange signaling protocol
DE3674678D1 (en) * 1985-08-14 1990-11-08 Siemens Ag CIRCUIT ARRANGEMENT FOR TELECOMMUNICATION SYSTEMS, ESPECIALLY TELECOMMUNICATION SYSTEMS, WITH REQUESTING SITES, CYCLICALLY CONTROLLING INFORMATION REQUESTING DEVICES.
ATE50107T1 (en) * 1985-08-14 1990-02-15 Siemens Ag CIRCUIT ARRANGEMENT FOR TELECOMMUNICATION SYSTEMS, IN PARTICULAR TELEPHONE EXCHANGE SYSTEMS, WITH INFORMATION REQUEST DEVICES CYCLICLY CONTROLLING REQUEST POINTS.
US4660220A (en) * 1986-02-25 1987-04-21 Kraus Constantine R No answer mode for telephone systems
US4763191A (en) * 1986-03-17 1988-08-09 American Telephone And Telegraph Company, At&T Bell Laboratories Dial-up telephone network equipment for requesting an identified selection
US5289542A (en) * 1991-03-04 1994-02-22 At&T Bell Laboratories Caller identification system with encryption
US5329581A (en) * 1991-12-23 1994-07-12 At&T Bell Laboratories Target area calling system
US5444774A (en) * 1992-06-26 1995-08-22 At&T Corp. Interactive queuing sytem for call centers
US5521965A (en) * 1992-08-14 1996-05-28 Bell Atlantic Network Services, Inc. Apparatus and method for handling busy calls in telephone network
US6618474B1 (en) 1999-03-08 2003-09-09 Morris Reese Method and apparatus for providing to a customer a promotional message between ringing signals or after a call waiting tone
US8489915B2 (en) * 2009-07-30 2013-07-16 Cleversafe, Inc. Method and apparatus for storage integrity processing based on error types in a dispersed storage network
CN111618854A (en) * 2020-05-26 2020-09-04 中国人民解放军国防科技大学 Task segmentation and collaboration method for security robot

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1024124B (en) * 1953-03-30 1958-02-13 Lionel Roy Frank Harris Method for selecting one of several lines in telecommunication systems, in particular in telephone systems that work according to the time division multiplex method
NL231869A (en) * 1957-10-07
BE625449A (en) * 1961-04-25

Also Published As

Publication number Publication date
SE334392B (en) 1971-04-26
AT269518B (en) 1969-03-25
US3570008A (en) 1971-03-09
NL6415240A (en) 1965-07-02
IL22240A (en) 1968-04-25
IL22237A (en) 1968-04-25
GB1081815A (en) 1967-09-06
BE654495A (en) 1965-04-16
NL6415236A (en) 1965-07-02
IL22242A (en) 1968-04-25
GB1081814A (en) 1967-09-06
IL22243A (en) 1968-04-25
NL6415235A (en) 1965-07-02
DE1437576A1 (en) 1969-02-27
FR1426972A (en) 1966-02-04
SE326990B (en) 1970-08-10
NL6415238A (en) 1965-07-02
DK136878C (en) 1978-05-16
IL22238A (en) 1968-04-25
FR1442332A (en) 1966-06-17
CH479992A (en) 1969-10-15
NL6415241A (en) 1965-07-02
AT274057B (en) 1969-09-10
CH476442A (en) 1969-07-31
BE657775A (en) 1965-04-16
AT272712B (en) 1969-07-25
CH479990A (en) 1969-10-15
FR1426973A (en) 1966-02-04
AT274056B (en) 1969-09-10
CH476441A (en) 1969-07-31
GB1081813A (en) 1967-09-06
DE1474095B1 (en) 1970-08-20
DE1474094B (en) 1971-04-15
AT271950B (en) 1969-06-25
BE654494A (en) 1965-04-16
GB1081817A (en) 1967-09-06
BR6463328D0 (en) 1973-06-26
BE654497A (en) 1965-04-16
SE319926B (en) 1970-01-26
IL22241A (en) 1968-04-25
IL22239A (en) 1968-04-25
NL6415237A (en) 1965-07-02
CH479993A (en) 1969-10-15
FR1446309A (en) 1966-07-22
AT271951B (en) 1969-06-25
CH477140A (en) 1969-08-15
FR1426970A (en) 1966-02-04
DE1437577A1 (en) 1969-02-20
SE312940B (en) 1969-07-28
DK114415B (en) 1969-06-30
GB1081816A (en) 1967-09-06
JPS514062B1 (en) 1976-02-07
DE1474093A1 (en) 1970-07-09
BR6463331D0 (en) 1973-06-26
BE654493A (en) 1965-04-16
DE1437577B2 (en) 1971-11-25
BR6463330D0 (en) 1973-06-26
DE1474096A1 (en) 1970-07-09
BE654492A (en) 1965-04-16
CH479991A (en) 1969-10-15
GB1081811A (en) 1967-09-06
AT273543B (en) 1969-08-11
DK136007C (en) 1978-01-09
DE1474093B2 (en) 1972-09-07
DK136878B (en) 1977-12-05
DK136007B (en) 1977-07-25
NL140351B (en) 1973-11-15
NL137733C (en)
GB1081812A (en) 1967-09-06
FR1426971A (en) 1966-02-04
NL145065B (en) 1975-02-17
FR1442298A (en) 1966-06-17
BR6463327D0 (en) 1973-06-26
NL6415239A (en) 1965-07-02
DE1437576B2 (en) 1971-08-12
BE654496A (en) 1965-04-16
DE1437576C3 (en) 1972-03-16

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