IT1232691B - Dispositivo totalmente oscurante con contemporaneo passaggio d'aria e attenuazione dei rumori. - Google Patents

Dispositivo totalmente oscurante con contemporaneo passaggio d'aria e attenuazione dei rumori.

Info

Publication number
IT1232691B
IT1232691B IT8920992A IT2099289A IT1232691B IT 1232691 B IT1232691 B IT 1232691B IT 8920992 A IT8920992 A IT 8920992A IT 2099289 A IT2099289 A IT 2099289A IT 1232691 B IT1232691 B IT 1232691B
Authority
IT
Italy
Prior art keywords
totally
air passage
noise attenuation
darkening device
contemporary air
Prior art date
Application number
IT8920992A
Other languages
English (en)
Other versions
IT8920992A0 (it
Inventor
Pietro Siviero
Original Assignee
Pietro Siviero
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 Pietro Siviero filed Critical Pietro Siviero
Priority to IT8920992A priority Critical patent/IT1232691B/it
Publication of IT8920992A0 publication Critical patent/IT8920992A0/it
Application granted granted Critical
Publication of IT1232691B publication Critical patent/IT1232691B/it

Links

IT8920992A 1989-06-27 1989-06-27 Dispositivo totalmente oscurante con contemporaneo passaggio d'aria e attenuazione dei rumori. IT1232691B (it)

Priority Applications (1)

Application Number Priority Date Filing Date Title
IT8920992A IT1232691B (it) 1989-06-27 1989-06-27 Dispositivo totalmente oscurante con contemporaneo passaggio d'aria e attenuazione dei rumori.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT8920992A IT1232691B (it) 1989-06-27 1989-06-27 Dispositivo totalmente oscurante con contemporaneo passaggio d'aria e attenuazione dei rumori.

Publications (2)

Publication Number Publication Date
IT8920992A0 IT8920992A0 (it) 1989-06-27
IT1232691B true IT1232691B (it) 1992-03-04

Family

ID=11175093

Family Applications (1)

Application Number Title Priority Date Filing Date
IT8920992A IT1232691B (it) 1989-06-27 1989-06-27 Dispositivo totalmente oscurante con contemporaneo passaggio d'aria e attenuazione dei rumori.

Country Status (1)

Country Link
IT (1) IT1232691B (it)

Also Published As

Publication number Publication date
IT8920992A0 (it) 1989-06-27

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Legal Events

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TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19950614