Patent US2988008A successfully refreshed from Google Patents.
Patent DE365680C successfully refreshed from Google Patents.
DE365680C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Process for washing oxygen directly from the air
Assignee: Individual
•
Filing: —
•
Granted: 1922-12-21
•
Expires: 1939-12-21
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-10-31 13:36
CPC Classifications
C; C01; C01B; C01B13/00; C01B13/02; C01B13/0229; C01B13/0248; C01B13/0285; C01B2210/00; C01B2210/0043; C01B2210/0046
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.