DE728602C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
HEPA filter for breathing apparatus
Assignee: BERNH DRAEGER
•
Filing: 1933-06-20
•
Granted: 1942-11-30
•
Expires: 1953-06-20
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-11-03 13:02
CPC Classifications
A; A62; A62B; A62B23/00
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Total Claims: 0
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References Cited (Backward Citations)
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