GB177240A - Improvements in calling devices adapted to be operated by wireless signals - Google Patents

Improvements in calling devices adapted to be operated by wireless signals

Info

Publication number
GB177240A
GB177240A GB35755/20A GB3575520A GB177240A GB 177240 A GB177240 A GB 177240A GB 35755/20 A GB35755/20 A GB 35755/20A GB 3575520 A GB3575520 A GB 3575520A GB 177240 A GB177240 A GB 177240A
Authority
GB
United Kingdom
Prior art keywords
relay
contact
operated
tongue
wireless signals
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
GB35755/20A
Other languages
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WILFRED JOHN DAVIS
Original Assignee
WILFRED JOHN DAVIS
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
Priority to NL11285D priority Critical patent/NL11285C/xx
Application filed by WILFRED JOHN DAVIS filed Critical WILFRED JOHN DAVIS
Priority to GB35755/20A priority patent/GB177240A/en
Priority to US512439A priority patent/US1719535A/en
Priority to FR544674D priority patent/FR544674A/fr
Publication of GB177240A publication Critical patent/GB177240A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L15/00—Apparatus or local circuits for transmitting or receiving dot-and-dash codes, e.g. Morse code
    • H04L15/24—Apparatus or circuits at the receiving end
    • H04L15/26—Apparatus or circuits at the receiving end operating only on reception of predetermined code signals, e.g. distress signals, party-line call signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Burglar Alarm Systems (AREA)
  • Near-Field Transmission Systems (AREA)
GB35755/20A 1920-12-20 1920-12-20 Improvements in calling devices adapted to be operated by wireless signals Expired GB177240A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
NL11285D NL11285C (enrdf_load_stackoverflow) 1920-12-20
GB35755/20A GB177240A (en) 1920-12-20 1920-12-20 Improvements in calling devices adapted to be operated by wireless signals
US512439A US1719535A (en) 1920-12-20 1921-11-03 Calling device for wireless telegraphy
FR544674D FR544674A (fr) 1920-12-20 1921-12-19 Perfectionnements aux dispositifs d'appel actionnés par les signaux de télégraphie sans fil

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB35755/20A GB177240A (en) 1920-12-20 1920-12-20 Improvements in calling devices adapted to be operated by wireless signals

Publications (1)

Publication Number Publication Date
GB177240A true GB177240A (en) 1922-03-20

Family

ID=10381212

Family Applications (1)

Application Number Title Priority Date Filing Date
GB35755/20A Expired GB177240A (en) 1920-12-20 1920-12-20 Improvements in calling devices adapted to be operated by wireless signals

Country Status (4)

Country Link
US (1) US1719535A (enrdf_load_stackoverflow)
FR (1) FR544674A (enrdf_load_stackoverflow)
GB (1) GB177240A (enrdf_load_stackoverflow)
NL (1) NL11285C (enrdf_load_stackoverflow)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2485551A (en) * 1944-08-29 1949-10-25 Western Union Telegraph Co Signal controlled selector
BE460890A (enrdf_load_stackoverflow) * 1944-12-11
US2517559A (en) * 1946-03-02 1950-08-08 Standard Telephones Cables Ltd Presettable impulse register
US2497936A (en) * 1946-10-18 1950-02-21 Rca Corp Code printer
US2577085A (en) * 1949-07-13 1951-12-04 Ibm Multielement code translator

Also Published As

Publication number Publication date
FR544674A (fr) 1922-09-26
NL11285C (enrdf_load_stackoverflow)
US1719535A (en) 1929-07-02

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