NL41927B - - Google Patents

Info

Publication number
NL41927B
NL41927B NL41927DA NL41927B NL 41927 B NL41927 B NL 41927B NL 41927D A NL41927D A NL 41927DA NL 41927 B NL41927 B NL 41927B
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 NL41927B publication Critical patent/NL41927B/xx

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)
NL41927D 1927-12-20 NL41927B (ja�@�@)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
NL41927B true NL41927B (ja�@�@)

Family

ID=31894342

Family Applications (1)

Application Number Title Priority Date Filing Date
NL41927D NL41927B (ja�@�@) 1927-12-20

Country Status (3)

Country Link
FR (1) FR652986A (ja�@�@)
GB (2) GB302678A (ja�@�@)
NL (1) NL41927B (ja�@�@)

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
GB316148A (en) 1930-01-06
GB302678A (ja�@�@) 1929-12-04
FR652986A (fr) 1929-03-15

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