NL178061B - METHOD AND EQUIPMENT FOR THE MANUFACTURE OF CASTS USING VACUUM, AND FORM CABINET TO BE USED IN THE PROCESS. - Google Patents

METHOD AND EQUIPMENT FOR THE MANUFACTURE OF CASTS USING VACUUM, AND FORM CABINET TO BE USED IN THE PROCESS.

Info

Publication number
NL178061B
NL178061B NLAANVRAGE7702251,A NL178061DA NL178061B NL 178061 B NL178061 B NL 178061B NL 178061D A NL178061D A NL 178061DA NL 178061 B NL178061 B NL 178061B
Authority
NL
Netherlands
Prior art keywords
casts
vacuum
manufacture
equipment
form cabinet
Prior art date
Application number
NLAANVRAGE7702251,A
Other languages
Dutch (nl)
Original Assignee
Mitsubishi Heavy Ind Ltd
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 NL178061B publication Critical patent/NL178061B/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/38—Graded-service arrangements, i.e. some subscribers prevented from establishing certain connections

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
NLAANVRAGE7702251,A 1952-05-04 METHOD AND EQUIPMENT FOR THE MANUFACTURE OF CASTS USING VACUUM, AND FORM CABINET TO BE USED IN THE PROCESS. NL178061B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES28403A DE940170C (en) 1952-05-04 1952-05-04 Circuit arrangement for telephone systems with dialer operation and participants with different traffic rights

Publications (1)

Publication Number Publication Date
NL178061B true NL178061B (en)

Family

ID=7479418

Family Applications (2)

Application Number Title Priority Date Filing Date
NL87429D NL87429C (en) 1952-05-04
NLAANVRAGE7702251,A NL178061B (en) 1952-05-04 METHOD AND EQUIPMENT FOR THE MANUFACTURE OF CASTS USING VACUUM, AND FORM CABINET TO BE USED IN THE PROCESS.

Family Applications Before (1)

Application Number Title Priority Date Filing Date
NL87429D NL87429C (en) 1952-05-04

Country Status (2)

Country Link
DE (1) DE940170C (en)
NL (2) NL178061B (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE599839C (en) * 1930-08-30 1934-07-14 August Heibel Circuit arrangement for telephone systems with dialer operation according to the caller system
DE659396C (en) * 1933-03-01 1938-05-07 Siemens & Halske Akt Ges Circuit arrangement for telephone systems
DE657359C (en) * 1933-03-01 1938-03-03 Siemens & Halske Akt Ges Circuit arrangement for telephone systems

Also Published As

Publication number Publication date
NL87429C (en)
DE940170C (en) 1956-03-15

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