US2244004A - Telephone system - Google Patents

Telephone system Download PDF

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Publication number
US2244004A
US2244004A US189940A US18994038A US2244004A US 2244004 A US2244004 A US 2244004A US 189940 A US189940 A US 189940A US 18994038 A US18994038 A US 18994038A US 2244004 A US2244004 A US 2244004A
Authority
US
United States
Prior art keywords
june
filed feb
sheets
sheet
telephone system
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
US189940A
Inventor
Edson L Erwin
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
Bell Telephone 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 Bell Telephone Laboratories Inc filed Critical Bell Telephone Laboratories Inc
Priority to US189940A priority Critical patent/US2244004A/en
Application granted granted Critical
Publication of US2244004A publication Critical patent/US2244004A/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

Description

June 3, 1941. E. ERWIN TELEPHONE SYSTEM Filed Feb. 1l, 1938 27 Sheets-Sheet l Q .um Q @t Qu @G @t Q @t E w Q S @t @..w mw ww @t Rut @Nut NGC. w @N wm but Q Qu .QR n .um
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DVD
June 3, 1941. E. L. ERwlN 2,244,004
TELEPHONE SYSTEM Filed Feb. 11, 1958 27 Sheets-Sheet 2 m f r 'U 4" 1| 4|' 41 I l n g l IlHl il* @L @L L I s g a t.
l l l L l L l, n, "-T
l I l s 84 /fvl/.E/s/rof?4 4 By EILERW/N WfWqM ATmRA/EP June 3, 1941. E. L. ERwlN TELEPHONE SYSTEM Filed Feb. l1. 1938 27 Sheets-Sheet 3 /NVENTOR E L .ERW/N ArmRA/Ey June 3, 1941. E, ERwxN TELEPHONE SYSTEM Filed Feb. 1l, 1958 27 SheebS--Sheeil 4 *Illll'llllrlllljl'lllll m. .Ubi
INVENTOR B E L. E RW/N www ATTORNEY .June 3, 1941.. E. L. ERWIN TELEPHONE SYSTEM Filedl Feb. 1.1, 1933 27 Sheets-Sheet 5 /NVENTOR Lm/WN @y Www WW ATTORNEY June 3,. 1941. E, L ERWIN TELEPHQNE SYSTEM Filed Feb. ll, 1938 27 lSl'leets-Shet 6 /Mf/vmR by ELERW/N www ATroRA/Ei/ June 3, 1941. E. L ERWIN' 2,244,004
TELEPHONE SYSTEM Filed Feb. ll, 1938 27 Sl'le'lZs--Sllee`ll 7 F/Rsr TEN/AHV' INI/ENTOR E. L ERW/N erw" ATTORN V June 3, 1941. E, L ERWIN 2,244,004
TELEPHONE SYSTEM Filed Feb. 11, 1958 '27 sheets-sheet s .mll
THIRD TERT/ARV /NVENTOR E L. [RW/N By m4 n ATTOR EV E. L. ERWIN TELEPHONE: SYSTEM June 3, 1941.
Filed Feb. 11, 1958 ,mw plm 27 Sheets-Sheet 9 BVW" /Nl/ENTOR E. L E RW/N Armp/VEV June 3, 1941. E. L. ERwlN 2,244,004
TELEPHONE SYSTEM Filed Feb. 1l, 1938 2'( Sheets-Sheet 10 HUNDREDS FIRST RECORDER /NVENTOR E L. ERWN Filed Feb. ll, 1938 27 Sheets-Sheet 1l m m w m m u /NVEA/TOR E. L FEW/IV June 3, 1941.. E. l. ERwxN I TELEPHONE `SYSTEM Filed Feb. l1, 1958 27 Sheets-Sheet 172 /M/EN7DR By EL ERW/N www June 3, 1941. E, L .ERwlN 2,244,004
TELEPHONE SYSTEM Filed Feb. ll, 1938 27 Sheets-Sheet 13 A TTORNEV June 3, 1941. E. l.. ERwlN TELEPHONE SYSTEM Filed Feb. 11. 193s 27 Sheets-Sheet 14 /M/ENTOR E. L. .mw/N @y WWW June 3, 1941. E. L. ERwiN TELEPHONE SYSTEM Filed Feb. 11, 1958 27 Sheets-Sheet 15 QMQQQQMQ Ruft /M/EA/on/ E. L .fR/N
ATTORNEY June 3, 1941. EJ., ERWIN TELEPHONE SYSTEM Filed Feb. 11, 1938 27 Sheets-Sheet 16 1, TUR/VE? June 3 1941. E. L, ERWIN 2,244,004
TELEPHONE SYSTEM Filed Feb. 1l, 1958 27 Sheets-Sheet 17 W5/v TOR E L. E RW//V 7' TOR/VE V E. L.. ERWIN June 3, 1941.
TELEP'ONE SYSTEM Filed Feb. ll, 1938 27 Sheets-Sheet 18 OQQ /A//ENTOR ELERW/N June 3, 1941. E. L. ERWIN 2,244,004
TELEPHONE SYSTEM Filed Feb. l1, 1938 27 Sheets-Sheet 19 /NVENTOR E. L ERW/N June 3, 1941. E. L. ERWIN .2,244,004
TELEPHONE SYSTEM Filed Feb. ll, 1938 27 Sheets-Sheet 20 TEN LINES COMMON GROUPS /NVENTOR E L. [RW/N TTORNE V
US189940A 1938-02-11 1938-02-11 Telephone system Expired - Lifetime US2244004A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US189940A US2244004A (en) 1938-02-11 1938-02-11 Telephone system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US189940A US2244004A (en) 1938-02-11 1938-02-11 Telephone system

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US2244004A true US2244004A (en) 1941-06-03

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ID=22699394

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US189940A Expired - Lifetime US2244004A (en) 1938-02-11 1938-02-11 Telephone system

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1003816B (en) * 1951-11-12 1957-03-07 Nederlanden Staat Circuit arrangement for establishing connections in telecommunication systems, in particular telephone systems, with registers and markers
US2998489A (en) * 1958-03-25 1961-08-29 Bell Telephone Labor Inc Automatic telephone message service
US3129407A (en) * 1961-11-24 1964-04-14 Bell Telephone Labor Inc Switching network control system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1003816B (en) * 1951-11-12 1957-03-07 Nederlanden Staat Circuit arrangement for establishing connections in telecommunication systems, in particular telephone systems, with registers and markers
US2998489A (en) * 1958-03-25 1961-08-29 Bell Telephone Labor Inc Automatic telephone message service
US3129407A (en) * 1961-11-24 1964-04-14 Bell Telephone Labor Inc Switching network control system

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