DK112390B - Trykknapbetjent signaleringsapparat. - Google Patents

Trykknapbetjent signaleringsapparat.

Info

Publication number
DK112390B
DK112390B DK250566AA DK250566A DK112390B DK 112390 B DK112390 B DK 112390B DK 250566A A DK250566A A DK 250566AA DK 250566 A DK250566 A DK 250566A DK 112390 B DK112390 B DK 112390B
Authority
DK
Denmark
Prior art keywords
pushbutton
signaling device
operated signaling
operated
signaling
Prior art date
Application number
DK250566AA
Other languages
English (en)
Inventor
Kroes J De
Eijk W Van
Original Assignee
Philips Nv
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 Philips Nv filed Critical Philips Nv
Publication of DK112390B publication Critical patent/DK112390B/da

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/26—Devices for calling a subscriber
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/26—Devices for calling a subscriber
    • H04M1/515—Devices for calling a subscriber by generating or selecting signals other than trains of pulses of similar shape, or signals other than currents of one or more different frequencies, e.g. generation of dc signals of alternating polarity, coded pulses or impedance dialling

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Push-Button Switches (AREA)
  • Telephonic Communication Services (AREA)
  • Devices For Supply Of Signal Current (AREA)
DK250566AA 1965-05-19 1966-05-16 Trykknapbetjent signaleringsapparat. DK112390B (da)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6506342A NL6506342A (da) 1965-05-19 1965-05-19

Publications (1)

Publication Number Publication Date
DK112390B true DK112390B (da) 1968-12-09

Family

ID=19793183

Family Applications (1)

Application Number Title Priority Date Filing Date
DK250566AA DK112390B (da) 1965-05-19 1966-05-16 Trykknapbetjent signaleringsapparat.

Country Status (10)

Country Link
US (1) US3483332A (da)
JP (1) JPS4326130B1 (da)
AT (1) AT254952B (da)
BE (1) BE681182A (da)
CH (1) CH439404A (da)
DE (1) DE1256713B (da)
DK (1) DK112390B (da)
FR (1) FR1484006A (da)
GB (1) GB1095616A (da)
NL (2) NL6506342A (da)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8614199D0 (en) * 1986-06-11 1986-07-16 Salplex Ltd Information handling & control systems

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2428016A (en) * 1944-04-21 1947-09-30 Int Standard Electric Corp Key-sender for telecommunication systems
BE466584A (da) * 1944-04-21
US2438496A (en) * 1944-05-01 1948-03-30 Int Standard Electric Corp Telephone system employing key type call transmitter
US2596025A (en) * 1948-01-03 1952-05-06 Ericsson Telefon Ab L M Signaling over telephone lines by means of a nonlinear resistance
DE1185665B (de) * 1963-09-14 1965-01-21 Standard Elektrik Lorenz Ag Tastengesteuerter Mehrfrequenz-Tongenerator

Also Published As

Publication number Publication date
NL6506342A (da) 1966-11-21
BE681182A (da) 1966-11-17
JPS4326130B1 (da) 1968-11-11
CH439404A (de) 1967-07-15
GB1095616A (en) 1967-12-20
FR1484006A (fr) 1967-06-09
AT254952B (de) 1967-06-12
US3483332A (en) 1969-12-09
NL134703C (da)
DE1256713B (de) 1967-12-21

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