DE398320C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Process for concentrating aqueous nitric acid
Assignee: BUESCHING W
•
Filing: 1922-08-18
•
Granted: 1924-07-07
•
Expires: 1942-08-18
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-11-06 04:16
CPC Classifications
C; C01; C01B; C01B21/00; C01B21/20; C01B21/38; C01B21/44
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.