Patent US2085239A successfully refreshed from Google Patents.
Patent US4166197A successfully refreshed from Google Patents.
AT200121B
Expired / Lapsed
AT
⏱️ 0.0 years remaining
Sound-reflecting, but gas and liquid permeable wall
Assignee: Rudolf Dipl Ing Jahn
•
Filing: 1957-04-01
•
Granted: 1958-10-25
•
Expires: 1977-04-01
Abstract
No abstract record available.
Inventors
- 👤 Rudolf Dipl Ing Jahn
Bibliographic Details
Application Number
—
Jurisdiction
AT
Data Source
google_patents
Last Synchronized
2026-10-31 19:19
CPC Classifications
G; G10; G10K; G10K11/00; G10K11/16; G10K11/172; E; E01; E01F; E01F8/00; E01F8/0005; E01F8/0047; E04; E04B; E04B1/00; E04B1/62; E04B1/74; E04B1/82; E04B1/84; E04B1/86; G10K11/18; G10K11/20; E04B2001/8414; E04B2001/8423
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.