NL56428C - - Google Patents

Info

Publication number
NL56428C
NL56428C NL56428DA NL56428C NL 56428 C NL56428 C NL 56428C NL 56428D A NL56428D A NL 56428DA NL 56428 C NL56428 C NL 56428C
Authority
NL
Netherlands
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 NL56428C publication Critical patent/NL56428C/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
    • H04Q1/442—Signalling arrangements; Manipulation of signalling currents using alternate current with out-of-voice band signalling frequencies
    • H04Q1/4423—Signalling arrangements; Manipulation of signalling currents using alternate current with out-of-voice band signalling frequencies using one signalling frequency

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)
NL56428D 1941-07-11 NL56428C (enrdf_load_stackoverflow)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL2474220X 1941-07-11

Publications (1)

Publication Number Publication Date
NL56428C true NL56428C (enrdf_load_stackoverflow)

Family

ID=19874317

Family Applications (1)

Application Number Title Priority Date Filing Date
NL56428D NL56428C (enrdf_load_stackoverflow) 1941-07-11

Country Status (3)

Country Link
US (1) US2474220A (enrdf_load_stackoverflow)
FR (1) FR883649A (enrdf_load_stackoverflow)
NL (1) NL56428C (enrdf_load_stackoverflow)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1964110A (en) * 1931-11-10 1934-06-26 American Telephone & Telegraph Control system
US1932606A (en) * 1932-06-11 1933-10-31 American Telephone & Telegraph Gas filled discharge tube control system
US2022030A (en) * 1935-02-16 1935-11-26 Bell Telephone Labor Inc Signaling system
US2104142A (en) * 1935-12-27 1938-01-04 American Telephone & Telegraph Gas-filled tube circuits
US2214572A (en) * 1939-04-25 1940-09-10 Press Wireless Inc Printing telegraph motor control method and apparatus

Also Published As

Publication number Publication date
US2474220A (en) 1949-06-28
FR883649A (fr) 1943-07-09

Similar Documents

Publication Publication Date Title
BE442109A (enrdf_load_stackoverflow)
BE442102A (enrdf_load_stackoverflow)
BE443214A (enrdf_load_stackoverflow)
BE439798A (enrdf_load_stackoverflow)
BE440507A (enrdf_load_stackoverflow)
BE440517A (enrdf_load_stackoverflow)
BE440580A (enrdf_load_stackoverflow)
BE440765A (enrdf_load_stackoverflow)
BE440983A (enrdf_load_stackoverflow)
BE440997A (enrdf_load_stackoverflow)
BE441030A (enrdf_load_stackoverflow)
BE441135A (enrdf_load_stackoverflow)
BE441261A (enrdf_load_stackoverflow)
BE441273A (enrdf_load_stackoverflow)
BE441477A (enrdf_load_stackoverflow)
BE441524A (enrdf_load_stackoverflow)
BE441571A (enrdf_load_stackoverflow)
BE441636A (enrdf_load_stackoverflow)
BE441671A (enrdf_load_stackoverflow)
BE441713A (enrdf_load_stackoverflow)
BE441833A (enrdf_load_stackoverflow)
BE441893A (enrdf_load_stackoverflow)
BE443220A (enrdf_load_stackoverflow)
BE442675A (enrdf_load_stackoverflow)
BE406989A (enrdf_load_stackoverflow)