US2254113A - Telephone system - Google Patents

Telephone system Download PDF

Info

Publication number
US2254113A
US2254113A US231780A US23178038A US2254113A US 2254113 A US2254113 A US 2254113A US 231780 A US231780 A US 231780A US 23178038 A US23178038 A US 23178038A US 2254113 A US2254113 A US 2254113A
Authority
US
United States
Prior art keywords
telephone system
telephone
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 - Lifetime
Application number
US231780A
Inventor
Wicks John
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.)
Associated Electric Laboratories Inc
Original Assignee
Associated Electric Laboratories Inc
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 Associated Electric Laboratories Inc filed Critical Associated Electric Laboratories Inc
Priority to US231780A priority Critical patent/US2254113A/en
Priority to US339474A priority patent/US2297092A/en
Application granted granted Critical
Publication of US2254113A publication Critical patent/US2254113A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/0016—Arrangements providing connection between exchanges
US231780A 1938-09-26 1938-09-26 Telephone system Expired - Lifetime US2254113A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US231780A US2254113A (en) 1938-09-26 1938-09-26 Telephone system
US339474A US2297092A (en) 1938-09-26 1940-06-08 Telephone system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US231780A US2254113A (en) 1938-09-26 1938-09-26 Telephone system

Publications (1)

Publication Number Publication Date
US2254113A true US2254113A (en) 1941-08-26

Family

ID=22870618

Family Applications (1)

Application Number Title Priority Date Filing Date
US231780A Expired - Lifetime US2254113A (en) 1938-09-26 1938-09-26 Telephone system

Country Status (1)

Country Link
US (1) US2254113A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2559165A (en) * 1947-02-14 1951-07-03 Automatic Elect Lab Carrier current telephone system
US2566009A (en) * 1947-12-12 1951-08-28 Automatic Elect Lab Interexchange switching telephone system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2559165A (en) * 1947-02-14 1951-07-03 Automatic Elect Lab Carrier current telephone system
US2566009A (en) * 1947-12-12 1951-08-28 Automatic Elect Lab Interexchange switching telephone system

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