DE656164C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Vacuum cleaner filters
Assignee: Siemens Schuckertwerke AG
•
Filing: 1935-11-14
•
Granted: 1938-01-31
•
Expires: 1955-11-14
Abstract
No abstract record available.
Inventors
- 👤 Wilhelm Weimers
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-10-25 20:05
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/10; A47L9/14; A47L9/12; A47L9/125
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.