NL20970C - - Google Patents

Info

Publication number
NL20970C
NL20970C NL20970DA NL20970C NL 20970 C NL20970 C NL 20970C NL 20970D A NL20970D A NL 20970DA NL 20970 C NL20970 C NL 20970C
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 NL20970C publication Critical patent/NL20970C/xx

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F5/00—Apparatus for producing preselected time intervals for use as timing standards
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
NL20970D 1927-03-19 NL20970C (enrdf_load_stackoverflow)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB766627A GB292261A (en) 1927-03-19 1927-03-19 Improvements in circuit interrupting devices particularly applicable for telephone systems

Publications (1)

Publication Number Publication Date
NL20970C true NL20970C (enrdf_load_stackoverflow)

Family

ID=9837478

Family Applications (1)

Application Number Title Priority Date Filing Date
NL20970D NL20970C (enrdf_load_stackoverflow) 1927-03-19

Country Status (5)

Country Link
BE (1) BE350874A (enrdf_load_stackoverflow)
CH (1) CH133031A (enrdf_load_stackoverflow)
FR (1) FR654068A (enrdf_load_stackoverflow)
GB (1) GB292261A (enrdf_load_stackoverflow)
NL (1) NL20970C (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2160017B (en) * 1984-06-05 1988-07-27 Inertia Switch Ltd Electrical switches responsive to two stimuli

Also Published As

Publication number Publication date
CH133031A (de) 1929-05-15
GB292261A (en) 1928-06-19
BE350874A (enrdf_load_stackoverflow)
FR654068A (fr) 1929-04-03

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