FR939174A - Improvements to pulse generators - Google Patents

Improvements to pulse generators

Info

Publication number: FR939174A
Authority: FR; France
Prior art keywords: pulse generators; generators; pulse
Prior art date: 1944-05-04
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

Application number

Other languages

Inventor

Roland Harris Dunn

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.)

International Standard Electric Corp

Original Assignee

International Standard Electric Corp

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.)

1944-05-04

Filing date

1946-05-10

Publication date

1948-11-05

1946-05-10 Application filed by International Standard Electric Corp filed Critical International Standard Electric Corp

1948-11-05 Application granted granted Critical

1948-11-05 Publication of FR939174A publication Critical patent/FR939174A/en

Status Expired legal-status Critical Current

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M19/00—Current supply arrangements for telephone systems
- H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone

Landscapes

Engineering & Computer Science (AREA)
Signal Processing (AREA)

FR939174D 1944-05-04 1946-05-10 Improvements to pulse generators Expired FR939174A (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
GB939174X		1944-05-04

Publications (1)

Publication Number	Publication Date
FR939174A true FR939174A (en)	1948-11-05

Family

ID=10748166

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FR939174D Expired FR939174A (en)	1944-05-04	1946-05-10	Improvements to pulse generators

Country Status (1)

Country	Link
FR (1)	FR939174A (en)

1946
- 1946-05-10 FR FR939174D patent/FR939174A/en not_active Expired

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