DE855800C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Air filter
Assignee: ATMOSPHERIC CONTROL Ltd
•
Filing: 1951-08-05
•
Granted: 1952-11-17
•
Expires: 1971-08-05
Abstract
No abstract record available.
Inventors
- 👤 Sydney Holt
- 👤 Cuthbert Vernon Ward
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-10-29 07:24
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/10; B01D46/12
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.