DE474399C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Spring made of rings touching each other by means of conical surfaces
Assignee: Krupp Stahl AG
•
Filing: —
•
Granted: 1929-03-30
•
Expires: 1946-03-30
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-11-04 19:08
CPC Classifications
F; F16; F16F; F16F3/00; F16F3/02; F16F3/04; F16F3/06
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.