US1837003A - Automatic telephone system - Google Patents

Automatic telephone system Download PDF

Info

Publication number
US1837003A
US1837003A US297610A US29761028A US1837003A US 1837003 A US1837003 A US 1837003A US 297610 A US297610 A US 297610A US 29761028 A US29761028 A US 29761028A US 1837003 A US1837003 A US 1837003A
Authority
US
United States
Prior art keywords
telephone system
dec
automatic telephone
sheets
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
US297610A
Other languages
English (en)
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.)
Reserve Holding Co
Original Assignee
Reserve Holding Co
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 Reserve Holding Co filed Critical Reserve Holding Co
Application granted granted Critical
Publication of US1837003A publication Critical patent/US1837003A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/0016—Arrangements providing connection between exchanges

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Relay Circuits (AREA)
  • Exchange Systems With Centralized Control (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
US297610A 1927-08-09 1928-08-06 Automatic telephone system Expired - Lifetime US1837003A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB21042/27A GB302200A (en) 1927-08-09 1927-08-09 Improvements in or relating to automatic or semi-automatic telephone systems

Publications (1)

Publication Number Publication Date
US1837003A true US1837003A (en) 1931-12-15

Family

ID=10156190

Family Applications (1)

Application Number Title Priority Date Filing Date
US297610A Expired - Lifetime US1837003A (en) 1927-08-09 1928-08-06 Automatic telephone system

Country Status (3)

Country Link
US (1) US1837003A (enrdf_load_stackoverflow)
FR (2) FR702872A (enrdf_load_stackoverflow)
GB (2) GB302217A (enrdf_load_stackoverflow)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2421717A (en) * 1943-04-28 1947-06-03 Kellogg Switchboard & Supply Automatic telephone system
US2423084A (en) * 1940-06-11 1947-07-01 Int Standard Electric Corp Telecommunication system employing voice frequency current for selective signaling
US2467490A (en) * 1944-04-01 1949-04-19 Automatic Elect Lab Telephone connection between exchanges of the decimal step-by-step type and the nondecimal revertive impulse control type
US2508656A (en) * 1944-12-08 1950-05-23 Automatic Elect Lab Interconnecting arrangement between telephone systems of the strowger and rotary revertive control types

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2423084A (en) * 1940-06-11 1947-07-01 Int Standard Electric Corp Telecommunication system employing voice frequency current for selective signaling
US2421717A (en) * 1943-04-28 1947-06-03 Kellogg Switchboard & Supply Automatic telephone system
US2467490A (en) * 1944-04-01 1949-04-19 Automatic Elect Lab Telephone connection between exchanges of the decimal step-by-step type and the nondecimal revertive impulse control type
US2508656A (en) * 1944-12-08 1950-05-23 Automatic Elect Lab Interconnecting arrangement between telephone systems of the strowger and rotary revertive control types

Also Published As

Publication number Publication date
GB302200A (en) 1928-12-10
FR702872A (fr) 1931-04-18
FR39002E (enrdf_load_stackoverflow) 1931-08-25
GB302217A (en) 1928-12-10

Similar Documents

Publication Publication Date Title
US2324509A (en) Machine for use in the manufacture of shoes
US2445000A (en) Rate-based restricted service telephone system
ES468937A1 (es) Procedimiento para rociar utiles de densificacion de maqui- nas para la fabricacion de articulos moldeados.
US1837003A (en) Automatic telephone system
US2857467A (en) Alternative trunking in telephone systems controlled by overflow trunks and common directors
GB1123102A (en) Improvements in or relating to communication systems
US2288088A (en) Tying machine
US2412258A (en) Telephone or like system
CH501348A (de) Schaltungsanordnung für eine Teilnehmerstelle eines Zeitmultiplex-Pulscodemodulationssystems, in welchem die Teilnehmerstellen durch eine Ringleitung verbunden sind
GB523455A (en) Improvements in or relating to riveting devices
US2567190A (en) Telephone exchange system
US1963929A (en) Telephone system
US2603712A (en) Party line identification in automatic telephony
GB525374A (en) Improvements in anodes for lead accumulators
GB736837A (en) Improvements in or relating to crates
JPS5414604A (en) Constituting system of communication network
US1649099A (en) Telephone-exchange system
US3122611A (en) Rate determining equipment
ES366919A1 (es) Un procedimiento para la sincronizacion de osciladores per-tenecientes a, por lo menos, dos redes de telecomunicacio-nes.
US2695444A (en) Apparatus for screening frames by a continuous process using screening rolls
SE413970B (sv) Tidsmultiplexkopplingsfelt
GB781563A (en) Improvements in or relating to time division multiplex communication systems
US1909082A (en) Multioffice telephone system
GB1171075A (en) Improvements in or relating to Telecommunications Exchange Systems.
JPS5472607A (en) Special number exchange network system