Patent US3471185A successfully refreshed from Google Patents.
Patent DE354754C successfully refreshed from Google Patents.
DE354754C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Receiving device for underwater sound signals
Assignee: Atlas Werke AG
•
Filing: 1920-03-03
•
Granted: 1922-06-13
•
Expires: 1940-03-03
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-10-31 21:50
CPC Classifications
G; G01; G01S; G01S1/00; G01S1/72
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.