GB302678A - - Google Patents

Info

Publication number
GB302678A
GB302678A GB19418/28A GB1941828A GB302678A GB 302678 A GB302678 A GB 302678A GB 19418/28 A GB19418/28 A GB 19418/28A GB 1941828 A GB1941828 A GB 1941828A GB 302678 A GB302678 A GB 302678A
Authority
GB
United Kingdom
Prior art keywords
finder
energizes
impulses
pulls
fire
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
GB19418/28A
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.)
Siemens and Halske AG
Original Assignee
Siemens and Halske AG
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 Siemens and Halske AG filed Critical Siemens and Halske AG
Publication of GB302678A publication Critical patent/GB302678A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/04—Telephonic communication systems specially adapted for combination with other electrical systems with alarm systems, e.g. fire, police or burglar alarm systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Signal Processing (AREA)
  • Alarm Systems (AREA)
GB19418/28A 1927-12-20 1928-07-04 Expired GB302678A (enrdf_load_stackoverflow)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE302678T 1927-12-20

Publications (1)

Publication Number Publication Date
GB302678A true GB302678A (enrdf_load_stackoverflow) 1929-12-04

Family

ID=31894342

Family Applications (2)

Application Number Title Priority Date Filing Date
GB19418/28A Expired GB302678A (enrdf_load_stackoverflow) 1927-12-20 1928-07-04
GB22658/29A Expired GB316148A (en) 1927-12-20 1928-07-04 An improved system for transmitting alarm signals

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB22658/29A Expired GB316148A (en) 1927-12-20 1928-07-04 An improved system for transmitting alarm signals

Country Status (3)

Country Link
FR (1) FR652986A (enrdf_load_stackoverflow)
GB (2) GB302678A (enrdf_load_stackoverflow)
NL (1) NL41927B (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9601528D0 (en) * 1996-01-25 1996-03-27 Chignell Richard J Underground pipe locating system

Also Published As

Publication number Publication date
FR652986A (fr) 1929-03-15
NL41927B (enrdf_load_stackoverflow)
GB316148A (en) 1930-01-06

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