Patent DE486330C successfully refreshed from Google Patents.
DE486330C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Advertising device in which advertising carriers hanging on a helical spring are set in upward and downward movement by the force of an automatically energized electromagnet using a mercury toggle switch
Assignee: Individual
•
Filing: 1928-02-28
•
Granted: 1929-11-13
•
Expires: 1948-02-28
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-10-31 17:39
CPC Classifications
G; G09; G09F; G09F11/00; G09F11/30; G09F11/34
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.