NL54789C - - Google Patents

Info

Publication number: NL54789C
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.)

1940-06-28

Publication of NL54789C publication Critical patent/NL54789C/xx

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M17/00—Prepayment of wireline communication systems, wireless communication systems or telephone systems
- H04M17/02—Coin-freed or check-freed systems, e.g. mobile- or card-operated phones, public telephones or booths
- H04M17/023—Circuit arrangements

Landscapes

Engineering & Computer Science (AREA)
Computer Networks & Wireless Communication (AREA)
Computer Security & Cryptography (AREA)
Signal Processing (AREA)
Prepayment Telephone Systems (AREA)

NL54789D 1940-06-28 NL54789C (c_deeref_Disk_and_Scratch_Disk_Pools_and_Their_Defaults.html)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
DE219318X		1940-06-28

Publications (1)

Publication Number	Publication Date
NL54789C true NL54789C (c_deeref_Disk_and_Scratch_Disk_Pools_and_Their_Defaults.html)

Family

ID=5831805

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
NL54789D NL54789C (c_deeref_Disk_and_Scratch_Disk_Pools_and_Their_Defaults.html)	1940-06-28

Country Status (2)

Country	Link
CH (1)	CH219318A (c_deeref_Disk_and_Scratch_Disk_Pools_and_Their_Defaults.html)
NL (1)	NL54789C (c_deeref_Disk_and_Scratch_Disk_Pools_and_Their_Defaults.html)

0
- NL NL54789D patent/NL54789C/xx active
1941
- 1941-04-09 CH CH219318D patent/CH219318A/de unknown

Also Published As

Publication number	Publication date
CH219318A (de)	1942-01-31

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