Patent US3878440A successfully refreshed from Google Patents.
Patent DE441382C successfully refreshed from Google Patents.
DE441382C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Device for attaching door frames to wall stirrups
Assignee: HANS DUVEN
•
Filing: —
•
Granted: 1927-03-03
•
Expires: 1944-03-03
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-11-08 01:05
CPC Classifications
E; E06; E06B; E06B1/00; E06B1/56; E06B1/60; E06B1/6015; E06B1/6023; E06B1/603
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.