BE482595A - - Google Patents

Info

Publication number
BE482595A
BE482595A BE482595DA BE482595A BE 482595 A BE482595 A BE 482595A BE 482595D A BE482595D A BE 482595DA BE 482595 A BE482595 A BE 482595A
Authority
BE
Belgium
Application number
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.)
Publication of BE482595A publication Critical patent/BE482595A/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details
    • H04Q1/30—Signalling arrangements; Manipulation of signalling currents
    • H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
    • H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
    • H04Q1/446—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using one signalling frequency
    • H04Q1/4465—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using one signalling frequency the same frequency being used for all signalling information, e.g. A.C. nr.9 system
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
    • B24B7/07—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor involving a stationary work-table
    • B24B7/08—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor involving a stationary work-table having an abrasive wheel built in
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/0016—Arrangements providing connection between exchanges

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mechanical Engineering (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
BE482595D 1947-05-09 BE482595A (en:Method)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB276278X 1947-05-09

Publications (1)

Publication Number Publication Date
BE482595A true BE482595A (en:Method)

Family

ID=10262688

Family Applications (2)

Application Number Title Priority Date Filing Date
BE482595D BE482595A (en:Method) 1947-05-09
BE485295D BE485295A (en:Method) 1947-05-09

Family Applications After (1)

Application Number Title Priority Date Filing Date
BE485295D BE485295A (en:Method) 1947-05-09

Country Status (6)

Country Link
US (1) US2623951A (en:Method)
BE (2) BE485295A (en:Method)
CH (1) CH276278A (en:Method)
FR (1) FR965690A (en:Method)
GB (1) GB639141A (en:Method)
NL (2) NL140240B (en:Method)

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1684422A (en) * 1928-09-18 Monitoring and controlling circuits for program distribution
US1733466A (en) * 1924-12-15 1929-10-29 Automatic Electric Inc Trouble-indicating system
US2068293A (en) * 1926-09-14 1937-01-19 American Telephone & Telegraph Means for producing time lag in electrical circuits
US1912450A (en) * 1930-12-19 1933-06-06 Western Electric Co Telephone system
US1899112A (en) * 1931-06-22 1933-02-28 Associated Electric Lab Inc Multioffice telephone system
US2095688A (en) * 1933-10-17 1937-10-12 James A Ballentine Circuit control mechanism
US2233282A (en) * 1939-08-16 1941-02-25 Bell Telephone Labor Inc Telephone system
US2249931A (en) * 1939-11-28 1941-07-22 Bell Telephone Labor Inc Indicating and control circuits
US2278172A (en) * 1940-10-29 1942-03-31 Bell Telephone Labor Inc Telephone system

Also Published As

Publication number Publication date
NL140240B (nl)
US2623951A (en) 1952-12-30
BE485295A (en:Method)
CH276278A (de) 1951-06-30
GB639141A (en) 1950-06-21
NL87551C (en:Method)
FR965690A (en:Method) 1950-09-19

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