US2161376A - Telephone system - Google Patents

Telephone system Download PDF

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Publication number
US2161376A
US2161376A US140022A US14002237A US2161376A US 2161376 A US2161376 A US 2161376A US 140022 A US140022 A US 140022A US 14002237 A US14002237 A US 14002237A US 2161376 A US2161376 A US 2161376A
Authority
US
United States
Prior art keywords
telephone system
moody
june
filed april
sheet
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
US140022A
Other languages
English (en)
Inventor
Moody Dwight Lyman
Newby Neal Dow
Shipley Frank Foster
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.)
AT&T Corp
Original Assignee
American Telephone and Telegraph Co 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
Priority to FR961407D priority Critical patent/FR961407A/fr
Priority to US22462D priority patent/USRE22462E/en
Application filed by American Telephone and Telegraph Co Inc filed Critical American Telephone and Telegraph Co Inc
Priority to US140022A priority patent/US2161376A/en
Application granted granted Critical
Publication of US2161376A publication Critical patent/US2161376A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/0004—Selecting arrangements using crossbar selectors in the switching stages

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Developing Agents For Electrophotography (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Facsimiles In General (AREA)
US140022A 1937-04-30 1937-04-30 Telephone system Expired - Lifetime US2161376A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR961407D FR961407A (xx) 1937-04-30
US22462D USRE22462E (en) 1937-04-30 Telephone system
US140022A US2161376A (en) 1937-04-30 1937-04-30 Telephone system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US140022A US2161376A (en) 1937-04-30 1937-04-30 Telephone system

Publications (1)

Publication Number Publication Date
US2161376A true US2161376A (en) 1939-06-06

Family

ID=22489366

Family Applications (2)

Application Number Title Priority Date Filing Date
US22462D Expired USRE22462E (en) 1937-04-30 Telephone system
US140022A Expired - Lifetime US2161376A (en) 1937-04-30 1937-04-30 Telephone system

Family Applications Before (1)

Application Number Title Priority Date Filing Date
US22462D Expired USRE22462E (en) 1937-04-30 Telephone system

Country Status (2)

Country Link
US (2) US2161376A (xx)
FR (1) FR961407A (xx)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2633500A (en) * 1947-04-03 1953-03-31 Int Standard Electric Corp Cordless switchboard telecommunication exchange
US2633499A (en) * 1947-04-03 1953-03-31 Int Standard Electric Corp Telecommunication switching system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE519001A (xx) * 1952-04-08

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2633500A (en) * 1947-04-03 1953-03-31 Int Standard Electric Corp Cordless switchboard telecommunication exchange
US2633499A (en) * 1947-04-03 1953-03-31 Int Standard Electric Corp Telecommunication switching system

Also Published As

Publication number Publication date
FR961407A (xx) 1950-05-11
USRE22462E (en) 1944-03-28

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