DE478950C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Screw locking against unauthorized loosening, especially for rail fastening
Assignee: FRIEDRICH WEICHARDT
•
Filing: 1926-08-29
•
Granted: 1929-07-06
•
Expires: 1946-08-29
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-10-30 03:40
CPC Classifications
E; E01; E01B; E01B9/00; E01B9/02; E01B9/04; E01B9/12; E01B11/00; E01B11/02; E01B11/36; E01B11/38; E01B29/00; E01B29/24; E01B29/28
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.