US1531080A - Telephone-exchange system - Google Patents

Telephone-exchange system Download PDF

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Publication number
US1531080A
US1531080A US1531080DA US1531080A US 1531080 A US1531080 A US 1531080A US 1531080D A US1531080D A US 1531080DA US 1531080 A US1531080 A US 1531080A
Authority
US
United States
Prior art keywords
dodge
march
telephone exchange
exchange system
sheets
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
Publication date
Application granted granted Critical
Publication of US1531080A publication Critical patent/US1531080A/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
    • H04Q3/0016—Arrangements providing connection between exchanges

Description

Match 24. 1925.
W. L. DODGE TELEPHONE EXCHANGE SYSTEM Filed July 2, 1921 27 Sheets-Sheet 2 March 24, 19 25.
W. L. DODG E TELEPHONE EXCHANGE SYSTEM Filed July 2, 1921 27 Sheets-Sheet 3 Wm BM hm NV 215 NNM wmm
QNN RR March 24, 1925.
W. L. DODGE TELEPHONE EXCHANGE SYSTEM Sheets-Sheet 4 hue/flan W/7/fd/77 A. fioaye.
March 24, i925. 1,531,080
W. L. DODGE TELEPHONE EXCHANGE SYSTEM Filed July 2, 1921 //7 1/8/7/0/1' W/fl/bm 1.00096.
March 24, 1925.
W. L. DODGE TELEPHONE EXCHANGE SYSTEM Wren/0n 14 17/1270? A. 00096. fly E. R. Y1 810 444 Affy Filed July 2, 1921 March 24, 1925.
W. L. DODGE TELEPHONE EXCHANGE SYSTEI Filed July 2 /m/e/7/0r.' Wf/fluml. 00096. b
y QRM M 4/19.
March 24, 1925. 1,531,080
W. L. DODGE TELEPHONE EXCHANGE SYSTEII Filed July 2, 1921 27 Sheets-Sheet 8 mu als by HR (Hula/ 4195A March 24, 1925.
W. L DODGE TBLEPHQNB EXCHANGE SY S'EEII Nam Mverrfor. Wf/fiam L. flan/ye. by 8 W A/f}.
March 24, 1925. 1,531,080
w. noose TELEPHONE EXCHANGE SYSTEII Filed July 2. 1921 27 Sheets-Sheet l0 //1 yen/0r. W/7/fc7/77 L. .00 dye.
March 24, 1925. 1,531,080
w. L. DODGE TELEPHONE EXCHANGE SYS'I'EII Filed July 2, 1921 27 Sheets-Sheet l1 //7 yen/0r. W/'///'am 4. Dodge.
March 24, 1925 W. L. DODGE TELEPHONE EXCHANGE SYSTEI Filed July 2, 1921 2'7 Sheets-Sheet l2 Marh '24, 1925.
W. L. DODGE TELEPHONE EXCHANGE SYSTEM Fiied July 2, 1921 7 Sheets-Sheet 15 kbs QMQ Q5 km Q //71 e/7/0r. W/Y/I'am L Dadye.
March 24, 1925.
W. L. DODGE TELEPHONE EXCHANGE SYSTEM 27 Sheets-Sheet 15 a "m m E m W m4 Wm m m m R W 6 WJ Rm March 24, 1925.
W. L. DDDGE TELEPHONE EXCHANGE sYsrnu Filed July 2, 192].
v m w o N m w m n o QQNSEQR N a. 0 My 4 m. MR WQ iv March 24, 1925.
W. L. DODGE TELEPHONE EXCHANGE SYSTEM Filed July 2 1921 27 Sheets-Sheet 18 March 24, 1925.
W. L. DODGE TELEPHONE EXCHANGE SYSTBI Filed July 2 1921 2'? Sheets-Sheet 19 //7ve,'7f0r. W////am L fladye fly March 24, 1925.
W. L. DODGE TELEPHONE EXCHANGE SYSTEM Unnunuuuunnnuunuuuuu nnunnunuun mu 0 cm n can u 0 003 300 u on I on n um am noon uuuunuuu anon anon on D u n u D n D u
US1531080D Telephone-exchange system Expired - Lifetime US1531080A (en)

Publications (1)

Publication Number Publication Date
US1531080A true US1531080A (en) 1925-03-24

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ID=3408171

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US1531080D Expired - Lifetime US1531080A (en) Telephone-exchange system

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050252211A1 (en) * 2002-12-23 2005-11-17 Wolfram Schmid Exhaust gas turbocharger for an internal combustion engine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050252211A1 (en) * 2002-12-23 2005-11-17 Wolfram Schmid Exhaust gas turbocharger for an internal combustion engine

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