CH604106A5
Expired / Lapsed
CH
⏱️ 0.0 years remaining
Fire protection shutter for duct
Assignee: Hess & Cie Pilgersteg
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Filing: 1977-03-25
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Granted: —
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Expires: 1997-03-25
Abstract
Abstract Fire protection shutter for duct has insulating material between inner and outer skins of conduit section
Inventors
- 👤 Max Rueegg
Bibliographic Details
Application Number
—
Jurisdiction
CH
Data Source
google_patents
Last Synchronized
2026-11-06 14:09
CPC Classifications
F; F24; F24F; F24F13/00; F24F13/08; F24F13/10; F24F13/14; A; A62; A62C; A62C2/00; A62C2/06; A62C2/12; F24F11/00; F24F11/30; F24F11/32; F24F11/33; F24F11/35; F24F13/1406; F24F13/24; F24F2013/242
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