FR765048A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Improvements to filtering devices
Assignee: William Paterson
•
Filing: 1933-12-05
•
Granted: 1934-06-01
•
Expires: 1953-12-05
Abstract
No abstract record available.
Inventors
- 👤 William Paterson
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-26 03:24
CPC Classifications
B; B01; B01D; B01D24/00; B01D24/46; B01D24/4631; B01D24/02; B01D24/20; B01D24/22; B01D24/38; B01D2201/00; B01D2201/20; B01D2201/204; B01D2201/206
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.