Patent US33189A successfully refreshed from Google Patents.
DE577797C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Mobile hospital chair with device for climbing stairs
Assignee: FRITZ KIEFER
•
Filing: —
•
Granted: 1933-06-03
•
Expires: 1950-06-03
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-10-25 03:32
CPC Classifications
A; A61; A61G; A61G5/00; A61G5/06; A61G5/061; A61G5/063; A61G5/065
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.