NL3569C - - Google Patents

Info

Publication number: NL3569C
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.)

1913-03-25

Publication of NL3569C publication Critical patent/NL3569C/xx

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/60—Semi-automatic systems, i.e. in which the numerical selection of the outgoing line is under the control of an operator
- H04M3/62—Keyboard equipment
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/08—Indicating faults in circuits or apparatus
- H04M3/12—Marking faulty circuits "busy"; Enabling equipment to disengage itself from faulty circuits ; Using redundant circuits; Response of a circuit, apparatus or system to an error

Landscapes

Engineering & Computer Science (AREA)
Signal Processing (AREA)
Monitoring And Testing Of Exchanges (AREA)
Meter Arrangements (AREA)

NL3569D 1913-03-25 NL3569C (enrdf_load_stackoverflow)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
DE191407327X		1913-03-25

Publications (1)

Publication Number	Publication Date
NL3569C true NL3569C (enrdf_load_stackoverflow)

Family

ID=32604936

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
NL3569D NL3569C (enrdf_load_stackoverflow)	1913-03-25

Country Status (3)

Country	Link
DE (2)	DE293878C (enrdf_load_stackoverflow)
GB (1)	GB191407327A (enrdf_load_stackoverflow)
NL (1)	NL3569C (enrdf_load_stackoverflow)

0
- DE DENDAT292386D patent/DE292386C/de active Active
- NL NL3569D patent/NL3569C/xx active
- DE DENDAT293878D patent/DE293878C/de active Active
1914
- 1914-03-23 GB GB191407327D patent/GB191407327A/en not_active Expired

Also Published As

Publication number	Publication date
DE292386C (enrdf_load_stackoverflow)
GB191407327A (en)	1915-06-17
DE293878C (enrdf_load_stackoverflow)

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