IT7868686A0 - Filtro elettronico di sicurezza - Google Patents

Filtro elettronico di sicurezza

Info

Publication number: IT7868686A0
Authority: IT; Italy
Prior art keywords: electronic safety; safety filter; filter; electronic; safety
Prior art date: 1977-07-18

Application number

IT7868686A

Other languages

English (en)

Other versions

IT1108472B (it

Original Assignee

Westinghouse Air Brake 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.)

1977-07-18

Filing date

1978-07-17

Publication date

1978-07-17

1978-07-17 Application filed by Westinghouse Air Brake Co filed Critical Westinghouse Air Brake Co

1978-07-17 Publication of IT7868686A0 publication Critical patent/IT7868686A0/it

1985-12-09 Application granted granted Critical

1985-12-09 Publication of IT1108472B publication Critical patent/IT1108472B/it

Classifications

- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H11/00—Networks using active elements
- H03H11/02—Multiple-port networks
- H03H11/04—Frequency selective two-port networks
- H03H11/12—Frequency selective two-port networks using amplifiers with feedback
- H03H11/1213—Frequency selective two-port networks using amplifiers with feedback using transistor amplifiers

IT68686/78A 1977-07-18 1978-07-17 Filtro elettronico di sicurezza IT1108472B (it)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US81641677A	1977-07-18	1977-07-18

Publications (2)

Publication Number	Publication Date
IT7868686A0 true IT7868686A0 (it)	1978-07-17
IT1108472B IT1108472B (it)	1985-12-09

Family

ID=25220534

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
IT68686/78A IT1108472B (it)	1977-07-18	1978-07-17	Filtro elettronico di sicurezza

Country Status (2)

Country	Link
GB (1)	GB1603530A (it)
IT (1)	IT1108472B (it)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JP3072002B2 (ja) *	1994-08-01	2000-07-31	株式会社東芝	アクティブバンドパスフィルタ

1978
- 1978-05-17 GB GB20227/78A patent/GB1603530A/en not_active Expired
- 1978-07-17 IT IT68686/78A patent/IT1108472B/it active

Also Published As

Publication number	Publication date
IT1108472B (it)	1985-12-09
GB1603530A (en)	1981-11-25

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Legal Events

Date	Code	Title	Description
1999-10-27	TA	Fee payment date (situation as of event date), data collected since 19931001	Effective date: 19950727