Patent US3170805A successfully refreshed from Google Patents.
Patent FR1069766A successfully refreshed from Google Patents.
FR1069766A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Filter, especially for tube wells
Assignee: Wilhelm Degen
•
Filing: 1952-12-26
•
Granted: 1954-07-13
•
Expires: 1972-12-26
Abstract
No abstract record available.
Inventors
- 👤 Wilhelm Degen
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-30 22:55
CPC Classifications
E; E03; E03B; E03B3/00; E03B3/06; E03B3/08; E03B3/16; E03B3/18; E03B3/24; E03B3/26
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.