Patent CH81920A successfully refreshed from Google Patents.
CH81920A
Expired / Lapsed
CH
⏱️ 0.0 years remaining
tank
Assignee: Oskar Schaumann
•
Filing: 1918-12-27
•
Granted: —
•
Expires: 1938-12-27
Abstract
No abstract record available.
Inventors
- 👤 Oskar Schaumann
Bibliographic Details
Application Number
—
Jurisdiction
CH
Data Source
google_patents
Last Synchronized
2026-10-28 09:40
CPC Classifications
F; F41; F41H; F41H5/00; F41H5/02; F41H5/04; F41H5/0442; F41H5/045
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.